diff -r 1cc365c34125 -r e82b01d17a78 ui/motif/toolkit.c
--- a/ui/motif/toolkit.c	Fri Jan 29 18:48:56 2016 +0100
+++ b/ui/motif/toolkit.c	Fri Jan 29 19:11:15 2016 +0100
@@ -305,6 +305,6 @@
             type,
             8,
             PropModeReplace,
-            "dark",
+            (const unsigned char*)"dark",
             4);
 }