diff --git a/vlib/compiler/if_match.v b/vlib/compiler/if_match.v
index bda01455c5..04c3200f0e 100644
--- a/vlib/compiler/if_match.v
+++ b/vlib/compiler/if_match.v
@@ -12,6 +12,11 @@ import (
 fn (p mut Parser) match_statement(is_expr bool) string {
 	p.check(.key_match)
 	p.fspace()
+	is_mut := p.tok == .key_mut
+	if is_mut {
+		p.next()
+		p.fspace()
+	}
 	typ,expr := p.tmp_expr()
 	if typ.starts_with('array_') {
 		p.error('arrays cannot be compared')
@@ -140,7 +145,7 @@ fn (p mut Parser) match_statement(is_expr bool) string {
 				p.register_var(Var{
 					name: 'it'
 					typ: sum_child_type+'*'
-					is_mut: true
+					is_mut: is_mut
 					ptr: true
 				})
 			}
diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index 6c1cf8365a..9ea0aeae6d 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -197,6 +197,7 @@ fn (c &Checker) stmt(node ast.Stmt) {
 		}
 		ast.VarDecl {
 			typ := c.expr(it.expr)
+			// it.typ = typ
 			// println('checker: var decl $typ.name  it.typ=$it.typ.name $it.pos.line_nr')
 			/*
 			if typ.kind != .void {