diff --git a/ui-macos/bits/runpython.do b/ui-macos/bits/runpython.do
index e8082c5..a53247f 100644
--- a/ui-macos/bits/runpython.do
+++ b/ui-macos/bits/runpython.do
@@ -4,6 +4,7 @@ ARCHES=""
 printf "Platforms: "
 for d in /usr/libexec/gcc/darwin/*; do
     PLAT=$(basename "$d")
+    [ "$PLAT" != "ppc64" ] || continue  # fails for some reason on my Mac
     ARCHES="$ARCHES -arch $PLAT"
     printf "$PLAT "
 done