diff --git a/Modules/PhotoacousticsLib/MitkMCxyz/CMakeLists.txt b/Modules/PhotoacousticsLib/MitkMCxyz/CMakeLists.txt
index fdbf87e92e..8e528dc475 100644
--- a/Modules/PhotoacousticsLib/MitkMCxyz/CMakeLists.txt
+++ b/Modules/PhotoacousticsLib/MitkMCxyz/CMakeLists.txt
@@ -1,11 +1,11 @@
-OPTION(BUILD_PhotoacousticSimulationMCxyz "Build MiniApp for Photoacoustic Simulation Module (mcxyz)" ON)
+OPTION(BUILD_PhotoacousticSimulationMCxyz "Build MiniApp for Photoacoustic Simulation Module (mcxyz)" OFF)
 
 IF(BUILD_PhotoacousticSimulationMCxyz)
   PROJECT( MitkMCxyz )
     mitk_create_executable(MCxyz
       DEPENDS MitkCommandLine MitkCore MitkPhotoacousticsLib
       PACKAGE_DEPENDS
       CPP_FILES MitkMCxyz.cpp)
 
   install(TARGETS ${EXECUTABLE_TARGET} RUNTIME DESTINATION bin)
  ENDIF()