diff --git a/Source/Swig/misc.c b/Source/Swig/misc.c
index ac7392d9d..d92d4e410 100644
--- a/Source/Swig/misc.c
+++ b/Source/Swig/misc.c
@@ -1163,6 +1163,7 @@ int Swig_scopename_check(const String *s) {
 String *Swig_string_command(String *s) {
   Swig_error("SWIG", Getline(s), "Command encoder no longer supported - use regex encoder instead.\n");
   SWIG_exit(EXIT_FAILURE);
+  return 0;
 }
 
 /* -----------------------------------------------------------------------------