src/core/org/luaj/vm2/LuaTable.java

@@ -1246,14 +1246,15 @@ public class LuaTable extends LuaValue implements Metatable {
 		}
 
 		public Entry set(LuaValue value) {
+			if (value.type() == TNUMBER) {
 				LuaValue n = value.tonumber();
 				if (!n.isnil()) {
 					this.value = n.todouble();
 					return this;
-			} else {
-				return new NormalEntry( this.key, value );
 				}
 			}
+			return new NormalEntry( this.key, value );
+		}
 
 		public int keyindex( int mask ) {
 			return hashSlot( key, mask );