1 files changed, 1 insertions, 1 deletions
diff --git a/src/library.js b/src/library.js
index daba0611..7fbe335d 100644
--- a/src/library.js
+++ b/src/library.js
@@ -4437,7 +4437,7 @@ LibraryManager.library = {
   strcat: function(pdest, psrc) {
     pdest = pdest|0; psrc = psrc|0;
     var i = 0;
-    pdest = (pdest + _strlen(pdest))|0;
+    pdest = (pdest + (_strlen(pdest)|0))|0;
     do {
       {{{ makeCopyValues('pdest+i', 'psrc+i', 1, 'i8', null, 1) }}};
       i = (i+1)|0;