diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0a488ba4546..c8826daac6f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -74,7 +74,7 @@ endif()
 if(BUILD_BAREOS_BINARIES)
   add_subdirectory(core)
   add_subdirectory(webui)
-  if(NOT client-only)
+  if(NOT client-only AND NOT CMAKE_SYSTEM_NAME STREQUAL "Windows")
     add_subdirectory(systemtests)
   endif()
 endif()