diff --git a/compiler/fn.v b/compiler/fn.v
index a9e73e5ddd..011c09dca0 100644
--- a/compiler/fn.v
+++ b/compiler/fn.v
@@ -88,6 +88,11 @@ fn (f mut Fn) register_var(v Var) {
 	f.var_idx++
 }
 
+fn (f mut Fn) clear_vars() {
+	f.var_idx = 0
+	f.local_vars = []Var
+}
+
 // vlib header file?
 fn (p mut Parser) is_sig() bool {
 	return (p.build_mode == DEFAULT_MODE || p.build_mode == BUILD) &&
diff --git a/compiler/parser.v b/compiler/parser.v
index bdab9b4308..2ac66ebbc1 100644
--- a/compiler/parser.v
+++ b/compiler/parser.v
@@ -249,6 +249,9 @@ fn (p mut Parser) parse() {
 				} 
 				if p.cur_fn.name == '' {
 					p.cur_fn = MainFn 
+					if p.is_repl {
+						p.cur_fn.clear_vars()
+					}
 				} 
 				start := p.cgen.lines.len
 				p.statement(true)