diff --git a/newpkg b/newpkg
index 672b365..728239c 100644
--- a/newpkg
+++ b/newpkg
@@ -24,7 +24,7 @@ done
 
 $CP scripts/build.sh.generic $arg1/build.sh
 chmod 755 $arg1/build.sh
-if [ "$($UNAME -s)" == "IRIX" ]; then
+if [ "$($UNAME -s)" == "IRIX" -a "$($UNAME -s)" == "IRIX64" ]; then
     $SED -e 's;bin/bash;usr/local/bin/bash;g' $arg1/build.sh > $arg1/build.sh.tmp
     $MV $arg1/build.sh.tmp $arg1/build.sh
     $CP scripts/pkgdef.template.irix $arg1/meta/pkgdef