diff --git a/xpcom/base/Makefile.in b/xpcom/base/Makefile.in
index c1eacc97adb..96383688a51 100644
--- a/xpcom/base/Makefile.in
+++ b/xpcom/base/Makefile.in
@@ -147,6 +147,6 @@ include $(topsrcdir)/config/rules.mk
 DEFINES		+= -D_IMPL_NS_COM
 
 ifneq (,$(filter gtk2,$(MOZ_WIDGET_TOOLKIT)))
-CXXFLAGS        += $(MOZ_GTK2_CFLAGS)
+CXXFLAGS         += $(MOZ_GTK2_CFLAGS)
+EXTRA_DSO_LDOPTS += $(MOZ_GTK2_LIBS)
 endif
-