diff --git a/mozilla/xpcom/tests/services/Makefile.in b/mozilla/xpcom/tests/services/Makefile.in
index cb327d5099c..6d47807eb7b 100644
--- a/mozilla/xpcom/tests/services/Makefile.in
+++ b/mozilla/xpcom/tests/services/Makefile.in
@@ -30,6 +30,8 @@ LIBRARY_NAME	= MyService
 
 CPPSRCS		= MyService.cpp
 
+EXPORTS = MyService.h
+
 LOCAL_INCLUDES	= -I$(srcdir)/..
 
 EXTRA_DSO_LDOPTS += $(MOZ_COMPONENT_XPCOM_LIBS)