diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 257f3f9..85431f5 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -68,6 +68,7 @@
 LOCAL_DX_FLAGS:=
 LOCAL_EMMA_COVERAGE_FILTER:=
 LOCAL_EMMA_INSTRUMENT:=
+LOCAL_EXPORT_CFLAGS:=
 LOCAL_EXPORT_C_INCLUDE_DEPS:=
 LOCAL_EXPORT_C_INCLUDE_DIRS:=
 LOCAL_EXPORT_HEADER_LIBRARY_HEADERS:=