diff --git a/Makefile.system b/Makefile.system
index bffe684d7..2264b143b 100644
--- a/Makefile.system
+++ b/Makefile.system
@@ -381,7 +381,7 @@ EXTRALIB	+= -lm
 endif
 
 ifeq ($(OSNAME), FreeBSD)
-ifeq ($(ARCH), $(filter ($ARCH),arm arm64))
+ifeq ($(ARCH), $(filter $(ARCH),arm arm64))
 EXTRALIB	+= -lm
 endif
 endif