diff --git a/maps.md b/maps.md
index 075ed0182..537131642 100644
--- a/maps.md
+++ b/maps.md
@@ -504,7 +504,7 @@ func TestUpdate(t *testing.T) {
     dictionary := Dictionary{word: definition}
     newDefinition := "new definition"
 
-    dictionary.Update(dictionaryword, newDefinition)
+    dictionary.Update(word, newDefinition)
 
     assertDefinition(t, dictionary, word, newDefinition)
 }