FIRST SUPPLEMENTAL INDENTURE

Exhibit 10.6

FIRST SUPPLEMENTAL INDENTURE

This FIRST SUPPLEMENTAL INDENTURE, dated as of April 1, 2008 (the “First Supplemental Indenture”), by and among Abitibi-Consolidated Inc., a corporation duly organized and existing under the laws of Canada (the “Company”), Abitibi-Consolidated Company of Canada (“ACCC”), a corporation duly organized and existing under the laws of the Province of Quebec, and The Bank of Nova Scotia Trust Company of New York, as trustee (the “Trustee”), supplements the Indenture, dated as of December 11, 2001 (the “Indenture”), by and among the Company, ACCC and the Trustee.

All capitalized terms used but not defined in this First Supplemental Indenture shall have the respective meanings set forth in the Indenture;

WHEREAS, ACCC has issued, and the Trustee has authenticated and there have been delivered pursuant to the Indenture, $150,000,000 aggregate principal amount of 6.95% Senior Notes due June 20, 2008 (the “June 2008 Securities”), $150,000,000 aggregate principal amount of which is currently outstanding;

WHEREAS, other securities have been issued pursuant to the Indenture, namely $350,000,000 aggregate principal amount of 6.00% Senior Notes due June 20, 2013 ($350,000,000 aggregate principal amount of which is currently outstanding) and $450,000,000 aggregate principal amount of 8.375% Senior Notes due April 1, 2015 ($450,000,000 aggregate principal amount of which is currently outstanding) (collectively, the “Other Issued Securities”);

WHEREAS, this First Supplemental Indenture does not apply in respect of the Other Issued Securities and only applies in respect of the June 2008 Securities;

WHEREAS, pursuant to a second amended and restated offering circular dated March 18, 2008 (as modified, amended, restated or supplemented from time to time, the “Exchange Offer Circular”), ACCC is offering to exchange the June 2008 Securities for (i) cash and (ii) a new note in a principal amount of $550 per $1,000 principal amount of the June 2008 Securities validly tendered (and not validly withdrawn) by the Consent Payment Deadline (as such term is defined in the Exchange Offer Circular) or $600 per $1,000 principal amount of June 2008 Securities validly tendered (and not validly withdrawn) after the Consent Payment Deadline but prior to the Exchange Expiration Date (as such term is defined in the Exchange Offer Circular);

WHEREAS, it is a condition to the completion of the Exchange Offer, that the First Supplemental Indenture provide, in respect of the June 2008 Securities, for the deletion from the Indenture of Sections 10.6 and 10.7 respectively entitled “Limitation on Liens” and “Limitations on Sale and Leaseback” and certain conforming changes (the “Amendments”);

WHEREAS, pursuant to the Indenture, the Amendments require the written consent of the holders of at least a majority in aggregate principal amount of the June 2008 Securities outstanding;

WHEREAS, pursuant to the Exchange Offer Circular, the tendering of the June 2008 Securities is a deemed consent to the Amendments;

WHEREAS, more than a majority in aggregate principal amount of the June 2008 Securities have been validly tendered (and not validly withdrawn);

WHEREAS, pursuant to Section 9.2 of the Indenture, ACCC and the Company, when authorized by a Board Resolution, and the Trustee may enter into an indenture or indentures supplemental thereto for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of the Indenture or of modifying in any manner the rights of the Holders of any series of Securities and any related coupons under the Indenture, but only with the consent of the Holders of more than 50% in principal amount of the Outstanding Securities of each series of Securities then Outstanding affected thereby, in each case by Act of said Holders of Securities of each such series delivered to the Company, ACCC and the Trustee;

WHEREAS, all acts and proceedings required by law and the Indenture to authorize, approve and constitute this First Supplemental Indenture as a valid and binding agreement in respect of the June 2008 Securities for the uses and purposes set forth herein, in accordance with its terms, have been done and taken, and the execution and delivery of this First Supplemental Indenture have in all respects been duly authorized by the Company, ACCC and the Trustee; and

WHEREAS, the foregoing recitals are made as representations or statements of fact by the Company and ACCC and not by the Trustee.

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the Company, ACCC and the Trustee hereby agree as follows:

(b) Article VIII, Section 8.3 of the Indenture is hereby amended in respect of the June 2008 Securities only by deleting the first paragraph thereof in its entirety and replacing such first paragraph with the following:

“If, upon any consolidation or amalgamation of the Company or the Guarantor with or merger or arrangement of the Company or the Guarantor into any other corporation, or upon any conveyance, lease or transfer of all or substantially all of the properties and assets of the Company or the Guarantor to any Person in accordance with Section 8.1, any properties or assets of the Company or the Guarantor or any Subsidiary of the Company or the Guarantor owned immediately prior thereto, would thereupon become subject to any Lien, then (unless the sum of (i) the principal amount of indebtedness for borrowed money secured by Liens created, incurred or assumed after the date hereof and (ii) the Attributable Value of all Sale and Leaseback Transactions entered into after the date hereof and otherwise prohibited by this Indenture does not exceed 10% of the

Consolidated Net Tangible Assets of the Guarantor) such Obligor simultaneously with or prior to such consolidation, amalgamation, merger, arrangement, conveyance, lease or transfer, will cause such Securities to be so secured; provided, however, that, for the purpose of providing such equal and ratable security, the principal amount of Original Issue Discount Securities and Indexed Securities shall mean that amount which would, at the time of making such effective provision, be due and payable pursuant to Section 5.2 and the terms of such Original Issue Discount Securities and Indexed Securities upon a declaration of acceleration of the Maturity thereof, and the extent of such equal and ratable security shall be adjusted, to the extent permitted by law, as and when said amount changes over time pursuant to the terms of such Original Issue Discount Securities and Indexed Securities.”

(c) Article IX, Section 9.1 of the Indenture is hereby amended in respect of the June 2008 Securities only by deleting Subsection 6 thereof in its entirety and replacing such Subsection 6 with the following:

“(6) to secure the Securities pursuant to the requirements of Section 8.3 or otherwise; or”

(d) Article X, Section 10.8 of the Indenture is hereby amended in respect of the June 2008 Securities only by deleting the first paragraph thereof in its entirety and replacing such first paragraph with the following:

“The Company or the Guarantor may omit in any particular instance to comply with any covenant or condition set forth in Sections 8.3 and 10.5, and any other covenant not set forth herein and specified pursuant to Section 3.1 to be applicable to the Securities of any series, if before or after the time for such compliance the Holders of more than 50% in principal amount of the Outstanding Securities of each series of Securities affected by the omission (which, in the case of a covenant not set forth herein and specified pursuant to Section 3.1 to be applicable to the Securities of any series, shall include only those series to which such covenant is so specified to be applicable) shall, in each case by Act of such Holders, either waive such compliance in such instance or generally waive compliance with such covenant or condition, but no such waiver shall extend to or affect such covenant or condition except to the extent so expressly waived, and, until such waiver shall become effective, the obligations of the Company and the Guarantor and the duties of the Trustee with respect to any such covenant or condition shall remain in full force and effect.”

(e) Article XIV, Section 14.3 of the Indenture is hereby amended in respect of the June 2008 Securities only by deleting the first sentence thereof in its entirety and replacing such first sentence with the following:

“Upon the Company’s or the Guarantor’s exercise of the above option applicable to this Section with respect to any Securities of or within a series, the Company and the Guarantor shall be released from its obligations under Section 8.1, Section 8.3, Section 10.5 and, if specified pursuant to Section 3.1, its obligations under any other covenant, with respect to such Outstanding Securities and any related

coupons on and after the date the conditions set forth in Section 10.4 are satisfied (hereinafter, “covenant defeasance”), and such Securities and any related coupons shall thereafter be deemed not to be “Outstanding” for the purposes of any request, demand, authorization, direction, notice, consent, waiver or Act of Holders (and the consequences of any thereof) in connection with such covenants, but shall continue to be deemed “Outstanding” for all other purposes hereunder.”

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IN WITNESS WHEREOF, the parties have caused this First Supplemental Indenture to be duly executed, as of the day and year first above written.