diff --git a/channels/h323/Makefile b/channels/h323/Makefile
index 86dbee4e72..204cb5165a 100755
--- a/channels/h323/Makefile
+++ b/channels/h323/Makefile
@@ -24,7 +24,7 @@ PROC=$(shell uname -m)
 ifneq (${OSARCH},FreeBSD)
 ifneq (${OSARCH},NetBSD)
 ifneq (${PROC},ppc)
-CFLAGS += -march=$(ARCH)
+CFLAGS += -march=$(PROC)
 endif
 endif
 endif