diff --git a/python/CMakeLists.txt b/python/CMakeLists.txt
index 2df02b0c..73431a8a 100644
--- a/python/CMakeLists.txt
+++ b/python/CMakeLists.txt
@@ -42,7 +42,7 @@ if(WIN32 AND NOT VIENNALS_SYSTEM_VTK)
   setup_vtk_env(${PROJECT_NAME} ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
 endif()
 
-if (NOT VIENNALS_SYSTEM_VTK)
+if(NOT VIENNALS_SYSTEM_VTK)
   message(STATUS "[ViennaLS] Setting VTK_DIR to previously created environment")
   # We set `VTK_DIR` to the previously setup environment to ensure that the python script can find
   # the library files