diff --git a/haxe/goclass.go b/haxe/goclass.go
index e858bcb921c..b5798acd76f 100644
--- a/haxe/goclass.go
+++ b/haxe/goclass.go
@@ -134,9 +134,11 @@ func (langType) Const(lit ssa.Const, position string) (typ, val string) {
 			}
 			switch lit.Type().Underlying().(*types.Basic).Kind() {
 			case types.Uint, types.Uint32, types.Uint16, types.Uint8:
-				if l == -1 {
-					return "Int",
-						" #if js untyped __js__(\"0xffffffff\") #elseif php untyped __php__(\"0xffffffff\") #else (-1) #end "
+				if l < 0 {
+					q := uint64(l) & 0xFFFFFFFF
+					return "Int", fmt.Sprintf(
+						" #if js untyped __js__(\"0x%x\") #elseif php untyped __php__(\"0x%x\") #else 0x%x #end ",
+						q, q, q)
 				} else {
 					return "Int", fmt.Sprintf(" (%d) ", l)
 				}
diff --git a/haxe/ops.go b/haxe/ops.go
index 33c7056331e..98aaba8af92 100644
--- a/haxe/ops.go
+++ b/haxe/ops.go
@@ -235,7 +235,7 @@ func (l langType) codeBinOp(op string, v1, v2 interface{}, errorInfo string) str
 						op = ">>>" // logical right shift if unsigned
 					}
 				}
-				ret = "(" + v1string + op + v2string + ")"
+				ret = "({var _v1:Int=" + v1string + "; var _v2:Int=" + v2string + "; _v2==0?_v1:_v1" + op + "_v2;})" //NoOp if v2==0
 			case "/":
 				switch v1.(ssa.Value).Type().Underlying().(*types.Basic).Kind() {
 				case types.Int8: