diff --git a/vlib/builtin/array.v b/vlib/builtin/array.v
index e733dc4021..26509d4ec7 100644
--- a/vlib/builtin/array.v
+++ b/vlib/builtin/array.v
@@ -259,6 +259,26 @@ pub fn (a []string) str() string {
 	return sb.str()
 }
 
+// "[true, true, false]"
+pub fn (a []bool) str() string {
+	mut sb := strings.new_builder(a.len * 3)
+	sb.write('[')
+	for i := 0; i < a.len; i++ {
+		val := a[i]
+		if val {
+			sb.write('true')
+		} else {
+			sb.write('false')
+			
+		}	
+		if i < a.len - 1 {
+			sb.write(', ')
+		}
+	}
+	sb.write(']')
+	return sb.str()
+}
+
 pub fn (b []byte) hex() string {
 	mut hex := malloc(b.len*2+1)
 	mut ptr := &hex[0]
diff --git a/vlib/compiler/comptime.v b/vlib/compiler/comptime.v
index 6b035b7760..b7245437f3 100644
--- a/vlib/compiler/comptime.v
+++ b/vlib/compiler/comptime.v
@@ -375,7 +375,7 @@ fn (p mut Parser) gen_array_filter(str_typ string, method_ph int) {
 	p.close_scope()
 }
 
-fn (p mut Parser) gen_array_map(str_typ string, method_ph int) {
+fn (p mut Parser) gen_array_map(str_typ string, method_ph int) string {
 	/*
 		// V
 		a := [1,2,3,4]
@@ -412,4 +412,5 @@ fn (p mut Parser) gen_array_map(str_typ string, method_ph int) {
 	p.gen(tmp) // TODO why does this `gen()` work?
 	p.check(.rpar)
 	p.close_scope()
+	return 'array_' + map_type
 }
diff --git a/vlib/compiler/parser.v b/vlib/compiler/parser.v
index e06d166cee..c4844f3cf1 100644
--- a/vlib/compiler/parser.v
+++ b/vlib/compiler/parser.v
@@ -1948,8 +1948,7 @@ fn (p mut Parser) dot(str_typ_ string, method_ph int) string {
 		return str_typ
 	}	
 	else if field_name == 'map' && str_typ.starts_with('array_') {
-		p.gen_array_map(str_typ, method_ph)
-		return str_typ
+		return p.gen_array_map(str_typ, method_ph)
 	}	
 	
 	fname_tidx := p.cur_tok_index()