diff --git a/Z80/Z80.cs b/Z80/Z80.cs
index eee1b09..8d10528 100644
--- a/Z80/Z80.cs
+++ b/Z80/Z80.cs
@@ -1432,7 +1432,7 @@ namespace Z80
                         if (memoryZ && this._displaced)
                         {
                             this.FetchDisplacement();
-                            this.Tick(4);
+                            this.Tick(5);
                         }
 
                         var value = this.R(z);