diff --git a/build/jam/OptionalPackages b/build/jam/OptionalPackages
index 7fcc37e7f3..1d0e3a7631 100644
--- a/build/jam/OptionalPackages
+++ b/build/jam/OptionalPackages
@@ -1619,8 +1619,8 @@ if [ IsOptionalHaikuImagePackageAdded WebPositive ] {
 		Echo "No optional package WebPositive available for gcc2" ;
 	} else {
 		InstallOptionalHaikuImagePackage
-			WebPositive-gcc4-x86-r573-2011-03-05.zip
-			: $(baseURL)/WebPositive-gcc4-x86-r573-2011-03-05.zip ;
+			WebPositive-gcc4-x86-r577-2011-03-12.zip
+			: $(baseURL)/WebPositive-gcc4-x86-r577-2011-03-12.zip ;
 		AddSymlinkToHaikuImage home config be Applications
 			: /boot/apps/WebPositive/WebPositive ;
 	}