diff --git a/Z80/Z80.cs b/Z80/Z80.cs
index 895067d..7634d67 100644
--- a/Z80/Z80.cs
+++ b/Z80/Z80.cs
@@ -539,6 +539,8 @@ namespace Z80
         {
             base.HandleINT();
 
+            this.DisableInterrupts();
+
             var data = this.ReadDataUnderInterrupt();
 
             switch (this.IM)