diff --git a/tools/molck/main.cc b/tools/molck/main.cc
index 8ffa3976580c24078737ffe5ea49388c8ca76d03..0e6c3a41d2c18ee4696de5e92592347fa02a45df 100644
--- a/tools/molck/main.cc
+++ b/tools/molck/main.cc
@@ -109,6 +109,7 @@ int main(int argc, char *argv[])
     usage();
   }
   IOProfile prof;
+  prof.fault_tolerant=true;
   String rm;
   String color;
   bool colored = false;