diff --git a/build/jam/OptionalBuildFeatures b/build/jam/OptionalBuildFeatures
index 9b7f443143..2e6a0bdeea 100644
--- a/build/jam/OptionalBuildFeatures
+++ b/build/jam/OptionalBuildFeatures
@@ -467,7 +467,7 @@ if [ IsOptionalHaikuImagePackageAdded WebPositive ] {
 	HAIKU_BUILD_FEATURE_WEBKIT = 1 ;
 }
 
-HAIKU_WEBKIT_FILE = haikuwebkit-1.1.3-x86-gcc4-2012-08-31.zip ;
+HAIKU_WEBKIT_FILE = haikuwebkit-1.1.3-x86-gcc4-2012-08-31a.zip ;
 
 if $(HAIKU_BUILD_FEATURE_WEBKIT) {
 	if $(TARGET_ARCH) != x86 {