--- a/cpp/examples/MinOZW/Makefile
+++ b/cpp/examples/MinOZW/Makefile
@@ -11,7 +11,7 @@
 
 
 DEBUG_CFLAGS    := -Wall -Wno-format -ggdb -DDEBUG $(CPPFLAGS) -std=c++11 
-RELEASE_CFLAGS  := -Wall -Wno-unknown-pragmas -Wno-format -O3 $(CPPFLAGS) -std=c++11 
+RELEASE_CFLAGS  := -Wall -Wno-unknown-pragmas -Wformat -O3 $(CPPFLAGS) -std=c++11 
 
 DEBUG_LDFLAGS	:= -g
 
