diff --git a/compiler/modules.v b/compiler/modules.v
index 02d8032bdb..748a1acaac 100644
--- a/compiler/modules.v
+++ b/compiler/modules.v
@@ -135,7 +135,7 @@ pub fn(graph &ModDepGraph) imports() []string {
 	return mods
 }
 
-pub fn(graph &ModDepGraph) last_node() {
+pub fn(graph &ModDepGraph) last_node() ModDepGraphNode {
 	return graph.nodes[graph.nodes.len-1]
 }
 
diff --git a/compiler/parser.v b/compiler/parser.v
index fb6ddca11d..0da6048e91 100644
--- a/compiler/parser.v
+++ b/compiler/parser.v
@@ -3331,8 +3331,8 @@ fn (p mut Parser) return_st() {
 	}
 	else {
 		// Don't allow `return val` in functions that don't return anything
-		if false && p.tok == .name || p.tok == .number {
-			p.error('function `$p.cur_fn.name` does not return a value')
+		if p.tok == .name || p.tok == .number || p.tok == .str {
+			p.error('function `$p.cur_fn.name` should not return a value')
 		}
 
 		if p.cur_fn.name == 'main' {