diff --git a/compiler/table.v b/compiler/table.v
index ead5aec864..64ee74dca8 100644
--- a/compiler/table.v
+++ b/compiler/table.v
@@ -5,7 +5,7 @@
 module main
 
 import os
-import math
+//import math
 import strings
 
 struct Table {
@@ -778,14 +778,14 @@ fn (table &Table) cgen_name_type_pair(name, typ string) string {
 fn is_valid_int_const(val, typ string) bool {
 	x := val.int()
 	switch typ {
-	case 'byte': return 0 <= x && x <= math.MaxU8
-	case 'u16': return 0 <= x && x <= math.MaxU16
+	case 'byte': return 0 <= x && x <= 255
+	case 'u16': return 0 <= x && x <= 65535
 	//case 'u32': return 0 <= x && x <= math.MaxU32
 	//case 'u64': return 0 <= x && x <= math.MaxU64
 	//////////////
-	case 'i8': return math.MinI8 <= x && x <= math.MaxI8
-	case 'i16': return math.MinI16 <= x && x <= math.MaxI16
-	case 'int': return math.MinI32 <= x && x <= math.MaxI32
+	case 'i8': return -128 <= x && x <= 127
+	case 'i16': return -32768 <= x && x <= 32767
+	case 'int': return -2147483648 <= x && x <= 2147483647
 	//case 'i64':
 		//x64 := val.i64()
 		//return i64(-(1<<63)) <= x64 && x64 <= i64((1<<63)-1)