diff --git a/tests/hghave.py b/tests/hghave.py
--- a/tests/hghave.py
+++ b/tests/hghave.py
@@ -274,6 +274,9 @@ def has_tic():
 def has_msys():
     return os.getenv('MSYSTEM')
 
+def has_aix():
+    return sys.platform.startswith("aix")
+
 checks = {
     "true": (lambda: True, "yak shaving"),
     "false": (lambda: False, "nail clipper"),
@@ -314,4 +317,5 @@ checks = {
     "unix-permissions": (has_unix_permissions, "unix-style permissions"),
     "windows": (has_windows, "Windows"),
     "msys": (has_msys, "Windows with MSYS"),
+    "aix": (has_aix, "AIX"),
 }
diff --git a/tests/test-dirstate.t b/tests/test-dirstate.t
--- a/tests/test-dirstate.t
+++ b/tests/test-dirstate.t
@@ -55,8 +55,9 @@ Status must not set a's entry to unset (
 
 Test modulo storage/comparison of absurd dates:
 
+#if no-aix
   $ touch -t 195001011200 a
   $ hg st
   $ hg debugstate
   n 644          2 2018-01-19 15:14:08 a
-
+#endif