diff --git a/codecs/gsm/Makefile b/codecs/gsm/Makefile
index 6b34233b2..f8a194add 100755
--- a/codecs/gsm/Makefile
+++ b/codecs/gsm/Makefile
@@ -42,6 +42,7 @@ ifneq (${OSARCH},SunOS)
 ifneq (${PROC},x86_64)
 ifneq (${PROC},ultrasparc)
 ifneq ($(shell uname -m),ppc)
+ifneq ($(shell uname -m),ppc64)
 ifneq ($(shell uname -m),alpha)
 OPTIMIZE+=-march=$(PROC)
 endif
@@ -50,6 +51,7 @@ 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.
@@ -215,6 +217,7 @@ GSM_SOURCES =	$(SRC)/add.c		\
 ifeq (${OSARCH},Linux)
 ifneq ($(shell uname -m),x86_64)
 ifneq ($(shell uname -m),ppc)
+ifneq ($(shell uname -m),ppc64)
 ifneq ($(shell uname -m),alpha)
 ifneq ($(shell uname -m),sparc64)
 GSM_SOURCES+= $(SRC)/k6opt.s
@@ -223,6 +226,7 @@ endif
 endif
 endif
 endif
+endif
 
 TOAST_SOURCES = $(SRC)/toast.c 		\
 		$(SRC)/toast_lin.c	\
@@ -271,6 +275,7 @@ GSM_OBJECTS =	$(SRC)/add.o		\
 ifeq (${OSARCH},Linux)
 ifneq ($(shell uname -m), x86_64)
 ifneq ($(shell uname -m), ppc)
+ifneq ($(shell uname -m), ppc64)
 ifneq ($(shell uname -m), alpha)
 ifneq ($(shell uname -m), sparc64)
 GSM_OBJECTS+= $(SRC)/k6opt.o
@@ -279,6 +284,7 @@ endif
 endif
 endif
 endif
+endif
 
 TOAST_OBJECTS =	$(SRC)/toast.o 		\
 		$(SRC)/toast_lin.o	\