diff --git a/lldb/tools/driver/Driver.cpp b/lldb/tools/driver/Driver.cpp
--- a/lldb/tools/driver/Driver.cpp
+++ b/lldb/tools/driver/Driver.cpp
@@ -832,7 +832,9 @@
 #if !defined(_MSC_VER)
   signal(SIGPIPE, SIG_IGN);
   signal(SIGWINCH, sigwinch_handler);
+#if !defined(_WIN32)
   signal(SIGTSTP, sigtstp_handler);
+#endif
 #endif
 
   int exit_code = 0;