diff --git a/src/de/inetsoftware/jwebassembly/javascript/NonGC.java b/src/de/inetsoftware/jwebassembly/javascript/NonGC.java
index 58b99e1..8bb17ff 100644
--- a/src/de/inetsoftware/jwebassembly/javascript/NonGC.java
+++ b/src/de/inetsoftware/jwebassembly/javascript/NonGC.java
@@ -60,6 +60,16 @@ public abstract class NonGC {
         return null; // for compiler
     }
 
+    @Import( js = "(a) => a.length" )
+    static int array_len_i8( Object array ) {
+        return 0; // for compiler
+    }
+
+    @Import( js = "(a) => a.length" )
+    static int array_len_i16( Object array ) {
+        return 0; // for compiler
+    }
+
     @Import( js = "(a) => a.length" )
     static int array_len_i32( Object array ) {
         return 0; // for compiler