--- src/xpenguins_theme.c~	2001-10-02 00:36:12.000000000 +0200
+++ src/xpenguins_theme.c	2013-12-03 12:54:49.000000000 +0100
@@ -608,7 +608,7 @@
 	    xpm_file_name = word;
 	  }
 	  else {
-	    snprintf(file_base, MAX_STRING_LENGTH, word);
+	    snprintf(file_base, MAX_STRING_LENGTH, "%s", word);
 	    xpm_file_name = file_name;
 	  }
 	  if (current->image) {