diff --git a/src/app_unit.rs b/src/app_unit.rs
index e2aa423..60ea8d4 100644
--- a/src/app_unit.rs
+++ b/src/app_unit.rs
@@ -189,7 +189,7 @@ impl Au {
 
     #[inline]
     fn clamp_self(&mut self) {
-        *self = self.clamp()
+        *self = Au::clamp(*self)
     }
 
     #[inline]