diff --git a/compiler/parser.v b/compiler/parser.v
index 81390b51e6..2c0c6327d7 100644
--- a/compiler/parser.v
+++ b/compiler/parser.v
@@ -2635,6 +2635,7 @@ fn (p mut Parser) map_init() string {
 		p.gen('new_map_init($i, sizeof($val_type), ' +
 			'(string[]){ $keys_gen }, ($val_type []){ $vals_gen } )')
 		typ := 'map_$val_type'
+		p.register_map(typ)
 		return typ
 	}
 	p.next()