diff --git a/util/cpp/proto.make b/util/cpp/proto.make
index 052ad644f..5555abc36 100644
--- a/util/cpp/proto.make
+++ b/util/cpp/proto.make
@@ -5,7 +5,7 @@
 SRC_DIR = $(SRC_HOME)/util/cpp
 
 MODULES=$(TARGET_HOME)/modules
-MODULES=$(UTIL_HOME)/modules
+UMODULES=$(UTIL_HOME)/modules
 MODULESLIB=$(MODULES)/lib
 UMODULESLIB=$(UMODULES)/lib
 BIN=$(TARGET_HOME)/lib.bin