diff --git a/mozilla/modules/libimg/png/Makefile.in b/mozilla/modules/libimg/png/Makefile.in
index da3ca352629..22b5b643642 100644
--- a/mozilla/modules/libimg/png/Makefile.in
+++ b/mozilla/modules/libimg/png/Makefile.in
@@ -50,6 +50,7 @@ REQUIRES	= util
 
 ifndef MOZ_NATIVE_ZLIB
 REQUIRES	+= zlib
+EXTRA_DSO_LDOPTS = -L$(DIST)/bin -lzlib
 endif
 
 LOCAL_INCLUDES	= -I$(srcdir)