diff --git a/config.mak.dev b/config.mak.dev
index 1ce4c70613..5229c35484 100644
--- a/config.mak.dev
+++ b/config.mak.dev
@@ -10,7 +10,7 @@ endif
 DEVELOPER_CFLAGS += -Wall
 ifeq ($(filter no-pedantic,$(DEVOPTS)),)
 DEVELOPER_CFLAGS += -pedantic
-ifneq (($or $(filter gcc5,$(COMPILER_FEATURES)),$(filter clang4,$(COMPILER_FEATURES))),)
+ifneq ($(or $(filter gcc5,$(COMPILER_FEATURES)),$(filter clang4,$(COMPILER_FEATURES))),)
 DEVELOPER_CFLAGS += -Wpedantic
 ifneq ($(filter gcc10,$(COMPILER_FEATURES)),)
 ifeq ($(uname_S),MINGW)