diff --git a/src/test/kotlin/Test6502TestSuite.kt b/src/test/kotlin/Test6502TestSuite.kt
index 737bb93..434dc5c 100644
--- a/src/test/kotlin/Test6502TestSuite.kt
+++ b/src/test/kotlin/Test6502TestSuite.kt
@@ -470,7 +470,7 @@ class Test6502TestSuite {
     }
 
     @Test
-    @Disabled("todo: get all cycle times right")
+    @Disabled("todo: get all cycle times right, and uses c64 specific timing hardware")
     fun testCputiming() {
         runTest("cputiming")
     }