diff --git a/vlib/strings/builder.v b/vlib/strings/builder.v
index 3465506ab7..610c933515 100644
--- a/vlib/strings/builder.v
+++ b/vlib/strings/builder.v
@@ -115,9 +115,9 @@ pub fn (mut b Builder) str() string {
 	}
 	b.buf << `\0`
 	s := string(b.buf,b.len)
-	//bis := b.initial_size
+	bis := b.initial_size
 	//free(b.buf.data)
-	//b.buf = []byte{cap: bis}
+	b.buf = []byte{cap: bis}
 	b.len = 0
 	return s
 }
diff --git a/vlib/v/gen/comptime.v b/vlib/v/gen/comptime.v
index 482284ce8a..30173399e7 100644
--- a/vlib/v/gen/comptime.v
+++ b/vlib/v/gen/comptime.v
@@ -21,7 +21,7 @@ fn (g &Gen) comptime_call(node ast.ComptimeCall) {
 				}
 			}
 		}
-		g.writeln('vweb__Context_html(&app->vweb, _tmpl_res_$g.fn_decl.name); string_free(&_tmpl_res_$g.fn_decl.name);')
+		g.writeln('vweb__Context_html(&app->vweb, _tmpl_res_$g.fn_decl.name); strings__Builder_free(&sb); string_free(&_tmpl_res_$g.fn_decl.name);')
 		return
 	}
 	g.writeln('// $' + 'method call. sym="$node.sym.name"')