diff --git a/tests/data/test962 b/tests/data/test962
index b6ec405f1d..35b368cfd0 100644
--- a/tests/data/test962
+++ b/tests/data/test962
@@ -19,6 +19,7 @@ smtp
 </server>
 <features>
 idn
+!win32
 </features>
 <setenv>
 LC_ALL=en_US.UTF-8
diff --git a/tests/data/test963 b/tests/data/test963
index 6328304c4a..7ea121507d 100644
--- a/tests/data/test963
+++ b/tests/data/test963
@@ -19,6 +19,7 @@ smtp
 </server>
 <features>
 idn
+!win32
 </features>
 <setenv>
 LC_ALL=en_US.UTF-8
diff --git a/tests/data/test964 b/tests/data/test964
index 326cdd21e1..5448d0f210 100644
--- a/tests/data/test964
+++ b/tests/data/test964
@@ -20,6 +20,7 @@ smtp
 </server>
 <features>
 idn
+!win32
 </features>
 <setenv>
 LC_ALL=en_US.UTF-8