diff --git a/src/hb-subset-cff-common.hh b/src/hb-subset-cff-common.hh
index 97c7ef647..a8921d852 100644
--- a/src/hb-subset-cff-common.hh
+++ b/src/hb-subset-cff-common.hh
@@ -118,7 +118,7 @@ struct str_encoder_t
       set_error ();
       return;
     }
-    memcpy (&buff.arrayZ + offset, &str[0], str.length);
+    memcpy (buff.arrayZ + offset, &str[0], str.length);
   }
 
   bool is_error () const { return error; }