diff --git a/tools/c-index-test/Makefile b/tools/c-index-test/Makefile
index 25478e1f96..eb4d7de271 100644
--- a/tools/c-index-test/Makefile
+++ b/tools/c-index-test/Makefile
@@ -29,5 +29,5 @@ USEDLIBS = clang.a clangFrontend.a clangDriver.a \
 
 include $(CLANG_LEVEL)/Makefile
 
-LIBS += "$(LIBXML2_LIBS)"
-CPPFLAGS += "$(LIBXML2_INC)"
+LIBS += $(LIBXML2_LIBS)
+CPPFLAGS += $(LIBXML2_INC)