diff --git a/port/port_example.h b/port/port_example.h
index a665910..704aa24 100644
--- a/port/port_example.h
+++ b/port/port_example.h
@@ -55,7 +55,7 @@ class CondVar {
   void Signal();
 
   // Wake up all waiting threads.
-  void SignallAll();
+  void SignalAll();
 };
 
 // ------------------ Compression -------------------