diff --git a/codecs/gsm/Makefile b/codecs/gsm/Makefile
index 06e96414a6..e311cf21b6 100755
--- a/codecs/gsm/Makefile
+++ b/codecs/gsm/Makefile
@@ -43,6 +43,8 @@ ifneq (${PROC},ultrasparc)
 ifneq ($(shell uname -m),ppc)
 ifneq ($(shell uname -m),alpha)
 ifneq (${PROC},sparc64)
+ifneq (${PROC},ppc)
+ifneq (${PROC},ppc64)
 OPTIMIZE+=-march=$(PROC)
 endif
 endif
@@ -50,6 +52,8 @@ endif
 endif
 endif
 endif
+endif
+endif
 
 #The problem with sparc is the best stuff is in newer versions of gcc (post 3.0) only.
 #This works for even old (2.96) versions of gcc and provides a small boost either way.