diff --git a/xpfe/components/build/Makefile.in b/xpfe/components/build/Makefile.in
index f598e3a3f3c..149fe42f985 100644
--- a/xpfe/components/build/Makefile.in
+++ b/xpfe/components/build/Makefile.in
@@ -88,7 +88,9 @@ SHARED_LIBRARY_LIBS += \
 	$(DIST)/lib/$(LIB_PREFIX)autocomplete_s.$(LIB_SUFFIX) \
 	$(DIST)/lib/$(LIB_PREFIX)history_s.$(LIB_SUFFIX) \
 	$(DIST)/lib/$(LIB_PREFIX)urlbarhistory_s.$(LIB_SUFFIX) \
+ifeq ($(OS_ARCH),WINNT)
 	$(DIST)/lib/$(LIB_PREFIX)alerts_s.$(LIB_SUFFIX) \
+endif
   $(NULL)
 endif
 
@@ -107,7 +109,9 @@ LOCAL_INCLUDES += \
   -I$(srcdir)/../history/src       \
 	-I$(srcdir)/../urlbarhistory/src \
   -I$(srcdir)/../download-manager/src \
+ifeq ($(OS_ARCH),WINNT)
 	-I$(srcdir)/../alerts/src \
+endif
   $(NULL)
 endif