diff --git a/envconf.go b/envconf.go
index b8cbf88..49f83dc 100644
--- a/envconf.go
+++ b/envconf.go
@@ -102,14 +102,14 @@ func (c *Config) Parse() {
 			c.env[k] = v
 		}
 	}
-	for k, v := range c.env {
-		if failed && (v.parsed.err == nil) {
-			if v.unset {
+	if failed {
+		for k, v := range c.env {
+			if (v.parsed.err == nil) && v.unset {
 				if v.empty {
 					v.parsed.err = errors.New(fmt.Sprintf(`Environment variable "%s" not found. It should have been of type %s.`, k, v.dtype))
 					c.env[k] = v
 				} else {
-					v.parsed.err = errors.New(fmt.Sprintf(`Environment variable "%s" not found. Default value of "%s"(%s) used.`, k, v.value, v.dtype))
+					v.parsed.err = errors.New(fmt.Sprintf(`Environment variable "%s" not found. Default value "%s" of type %s used.`, k, v.value, v.dtype))
 					c.env[k] = v
 				}
 			}