diff --git a/Modules/BreakpadCrashReporting/Testing/files.cmake b/Modules/BreakpadCrashReporting/Testing/files.cmake
index 4aa13224e4..212116a521 100644
--- a/Modules/BreakpadCrashReporting/Testing/files.cmake
+++ b/Modules/BreakpadCrashReporting/Testing/files.cmake
@@ -1,5 +1,5 @@
+if(CMAKE_SYSTEM MATCHES "Windows") # currently only for windows (see documentation of test mitkBreakpadCrashReportingDumpTest)
 set(MODULE_TESTS
-  if(CMAKE_SYSTEM MATCHES "Windows") # currently only for windows (see documentation of test mitkBreakpadCrashReportingDumpTest)
     mitkBreakpadCrashReportingDumpTest.cpp
-  endif()
 )
+endif()