diff --git a/build/jam/OptionalPackages b/build/jam/OptionalPackages
index a5961bb159..5af5efae8b 100644
--- a/build/jam/OptionalPackages
+++ b/build/jam/OptionalPackages
@@ -1229,7 +1229,7 @@ if [ IsOptionalHaikuImagePackageAdded Libmng ] {
 	} else {
 		InstallOptionalHaikuImagePackage
 			libmng-1.0.10-r1a4-x86-gcc2-2012-08-28.zip
-			: $(baseURL)/lib/libmng-1.0.10-r1a4-x86-gcc2-2012-08-28.zip  ;
+			: $(baseURL)/lib/libmng-1.0.10-r1a4-x86-gcc2-2012-08-28.zip ;
 	}
 }