diff --git a/srcpkgs/libfirm/template b/srcpkgs/libfirm/template
index b44f313d611..4dd8e28e997 100644
--- a/srcpkgs/libfirm/template
+++ b/srcpkgs/libfirm/template
@@ -27,6 +27,7 @@ EOF
 }
 
 do_build() {
+	export PERL5LIB=$wrksrc
 	vsed -i Makefile -e 's;"\\#;"#;'
 	make ${makejobs}
 }