--- a/foomaticrip.c
+++ b/foomaticrip.c
@@ -1383,7 +1383,7 @@
         dstrcpyf(filelist, "<STDIN>");
 
     /* Check filelist */
-    p = strtok(filelist->data, " ");
+    p = strtok(strdup(filelist->data), " ");
     while (p) {
         if (strcmp(p, "<STDIN>") != 0) {
             if (p[0] == '-')