diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index 7758a18146..f9e96e6ed0 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -633,8 +633,10 @@ pub fn (c mut Checker) postfix_expr(node ast.PostfixExpr) table.Type {
 	}
 	*/
 	typ := c.expr(node.expr)
-	if !table.is_number(typ) {
-		typ_sym := c.table.get_type_symbol(typ)
+	typ_sym := c.table.get_type_symbol(typ)
+	// if !table.is_number(typ) {
+	if !typ_sym.is_number() {
+		println(typ_sym.kind.str())
 		c.error('invalid operation: $node.op.str() (non-numeric type `$typ_sym.name`)', node.pos)
 	}
 	return typ
diff --git a/vlib/v/parser/parser.v b/vlib/v/parser/parser.v
index 1bc2c7172d..721f20f66b 100644
--- a/vlib/v/parser/parser.v
+++ b/vlib/v/parser/parser.v
@@ -799,6 +799,7 @@ pub fn (p mut Parser) expr(precedence int) (ast.Expr,table.Type) {
 			node = ast.PostfixExpr{
 				op: p.tok.kind
 				expr: node
+				pos: p.tok.position()
 			}
 			p.next()
 			return node,typ
diff --git a/vlib/v/table/types.v b/vlib/v/table/types.v
index 0c0cb62cdd..c194e4d3bd 100644
--- a/vlib/v/table/types.v
+++ b/vlib/v/table/types.v
@@ -101,10 +101,15 @@ pub const (
 	number_idxs = [int_type_idx, byte_type_idx, u64_type_idx]
 )
 
+/*
 pub fn is_number(typ Type) bool {
-	idx := type_idx(typ)
-	return idx in [int_type_idx, byte_type_idx, u64_type_idx]
+	typ_sym := c.table.get_type_symbol(typ)
+	return typ_sym.is_int()
+	//idx := type_idx(typ)
+	//return idx in [int_type_idx, byte_type_idx, u64_type_idx]
 }
+*/
+
 
 pub const (
 	void_type = new_type(void_type_idx)