diff --git a/core/Makefile b/core/Makefile
index 4a11b0d..572b269 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1302,7 +1302,7 @@
 	$(hide) rm -rf $@ $(zip_root)/releasetools/*.pyc
 	$(hide) (cd $(zip_root) && zip -qry $(abspath $@) *)
 	$(hide) zip -qry $(abspath $@) build/target/product/security/
-	$(hide) find device vendor -name \*.pk8 -o -name \*.x509.pem -o -name oem.prop | xargs zip -qry $(abspath $@)>/dev/null || true
+	$(hide) find device vendor -name \*.pk8 -o -name \*.x509.pem -o -name oem\*.prop | xargs zip -qry $(abspath $@)>/dev/null || true
 
 .PHONY: otatools-package
 otatools-package: $(BUILT_OTATOOLS_PACKAGE)