diff --git a/src/app/Dictionary.h b/src/app/Dictionary.h
index d89f459..0eb07ed 100644
--- a/src/app/Dictionary.h
+++ b/src/app/Dictionary.h
@@ -131,7 +131,7 @@ public:
       return remove(indiceToStr);
     }
 
-    boolean removeAt(int index)
+    boolean removeAt(unsigned int index)
     {
         unsigned int position(0);
         if(_head->_next == NULL) return false;