diff --git a/libs/mozilla.build.sh b/libs/mozilla.build.sh
index b47ba105a8..d8ce24fce9 100755
--- a/libs/mozilla.build.sh
+++ b/libs/mozilla.build.sh
@@ -1,3 +1,3 @@
 cd nsprpub && ./configure && make
-cd ../js/src && JS_THREADSAFE=1 OTHER_LIBS="-L../../../mozilla/nsprpub/dist/lib" INCLUDES="-I../../../mozilla/nsprpub/dist/include/nspr"  make -f Makefile.ref $(OS_CONFIG)_DBG.OBJ/libjs.a
+cd ../js/src && JS_THREADSAFE=1 OTHER_LIBS="-L../../../mozilla/nsprpub/dist/lib" INCLUDES="-I../../../mozilla/nsprpub/dist/include/nspr"  make -f Makefile.ref `find . -name libjs.a`