diff --git a/lldb/test/Shell/Reproducer/TestSynchronous.test b/lldb/test/Shell/Reproducer/TestSynchronous.test
index f32ce8c57224f6..c62cbe81aff3b9 100644
--- a/lldb/test/Shell/Reproducer/TestSynchronous.test
+++ b/lldb/test/Shell/Reproducer/TestSynchronous.test
@@ -1,4 +1,5 @@
 # REQUIRES: python
+# UNSUPPORTED: system-windows
 # Ensure that replay happens in synchronous mode.
 
 # RUN: rm -rf %t.repro