diff --git a/utils/unittest/googletest/Makefile b/utils/unittest/googletest/Makefile
index 22c8f36fccb..280b012e67e 100644
--- a/utils/unittest/googletest/Makefile
+++ b/utils/unittest/googletest/Makefile
@@ -36,4 +36,6 @@ endif
 
 NO_INSTALL = 1
 
+Source = $(filter-out gtest-all.cc,$(wildcard *.cc))
+
 include $(LEVEL)/Makefile.common