diff --git a/vlib/v/fmt/tests/map_init_comments_keep.vv b/vlib/v/fmt/tests/map_init_comments_keep.vv
new file mode 100644
index 00000000000000..5aedda6540c741
--- /dev/null
+++ b/vlib/v/fmt/tests/map_init_comments_keep.vv
@@ -0,0 +1,9 @@
+enum HttpHeader {
+	user_agent
+	referer
+}
+
+headers := {
+	HttpHeader.user_agent: 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36' // content_length: '17' // <-- will be deleted
+	.referer:              'wwww.google.com' // content_length: '17' // <-- won't be deleted
+}
diff --git a/vlib/v/parser/expr.v b/vlib/v/parser/expr.v
index 9e61b664d6a401..b5c8860b20fdb7 100644
--- a/vlib/v/parser/expr.v
+++ b/vlib/v/parser/expr.v
@@ -456,7 +456,8 @@ fn (mut p Parser) check_expr(precedence int) !ast.Expr {
 		p.if_cond_comments << p.eat_comments()
 	}
 	if p.pref.is_fmt && p.tok.kind == .comment && p.peek_tok.kind.is_infix() && !p.inside_infix
-		&& !(p.peek_tok.kind == .mul && p.peek_tok.pos().line_nr != p.tok.pos().line_nr) {
+		&& !p.inside_map_init && !(p.peek_tok.kind == .mul
+		&& p.peek_tok.pos().line_nr != p.tok.pos().line_nr) {
 		p.left_comments = p.eat_comments()
 	}
 	return p.expr_with_left(node, precedence, is_stmt_ident)