diff --git a/config.mak.dev b/config.mak.dev
index 9a998149d9..cbe8232047 100644
--- a/config.mak.dev
+++ b/config.mak.dev
@@ -33,7 +33,6 @@ ifeq ($(filter extra-all,$(DEVOPTS)),)
 CFLAGS += -Wno-empty-body
 CFLAGS += -Wno-missing-field-initializers
 CFLAGS += -Wno-sign-compare
-CFLAGS += -Wno-unused-function
 CFLAGS += -Wno-unused-parameter
 endif
 endif