--- a/tests/test-convert-p4-filetypes.t	Tue Sep 18 22:40:03 2018 -0400
+++ b/tests/test-convert-p4-filetypes.t	Tue Sep 18 23:47:21 2018 -0400
@@ -52,7 +52,7 @@
   >          p4 add -t $T file_$T2
   >          ;;
   >       binary*)
-  >          $PYTHON -c "open('file_$T2', 'wb').write(b'this is $T')"
+  >          "$PYTHON" -c "open('file_$T2', 'wb').write(b'this is $T')"
   >          p4 add -t $T file_$T2
   >          ;;
   >       *)