1 files changed, 1 insertions, 0 deletions
diff --git a/src/library.js b/src/library.js
index 5bdc64f4..2aace0fb 100644
--- a/src/library.js
+++ b/src/library.js
@@ -3197,6 +3197,7 @@ LibraryManager.library = {
 
   munmap: function(start, num) {
     _free(start);
+    return 0;
   },
 
   // TODO: Implement mremap.