1 files changed, 1 insertions, 1 deletions
diff --git a/src/emscripten-optimizer/istring.h b/src/emscripten-optimizer/istring.h
index abc1e327b..498c7c27c 100644
--- a/src/emscripten-optimizer/istring.h
+++ b/src/emscripten-optimizer/istring.h
@@ -75,10 +75,10 @@ struct IString {
         char *copy = (char*)malloc(strlen(s)+1); // XXX leaked
         strcpy(copy, s);
         s = copy;
+        strings->insert(s);
       } else {
         s = *existing;
       }
-      strings->insert(s);
       str = s;
     }
   }