diff --git a/mozilla/config/rules.mk b/mozilla/config/rules.mk
index 3dd3f448b00..b9cebdee177 100644
--- a/mozilla/config/rules.mk
+++ b/mozilla/config/rules.mk
@@ -931,9 +931,9 @@ ifdef MSMANIFEST_TOOL
 endif	# MSVC with manifest tool
 else
 ifeq ($(CPP_PROG_LINK),1)
-	$(HOST_CXX) -o $@ $(HOST_CFLAGS) $(HOST_LDFLAGS) $(HOST_PROGOBJS) $(HOST_LIBS) $(HOST_EXTRA_LIBS)
+	$(HOST_CXX) -o $@ $(HOST_CXXFLAGS) $(HOST_LDFLAGS) $(HOST_PROGOBJS) $(HOST_LIBS) $(HOST_EXTRA_LIBS)
 else
-	$(HOST_CC) -o $@ $(HOST_CXXFLAGS) $(HOST_LDFLAGS) $(HOST_PROGOBJS) $(HOST_LIBS) $(HOST_EXTRA_LIBS)
+	$(HOST_CC) -o $@ $(HOST_CFLAGS) $(HOST_LDFLAGS) $(HOST_PROGOBJS) $(HOST_LIBS) $(HOST_EXTRA_LIBS)
 endif # CPP_PROG_LINK
 endif
 endif