diff --git a/CMakeLists.txt b/CMakeLists.txt
index 97ff35f0225..1b9914ad939 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -479,7 +479,7 @@ add_custom_target(format
         COMMENT "formatting all files"
         )
 
-if(NOT EXISTS ${CMAKE_SOURCE_DIR}/.git/hooks/pre-commit)
+if(IS_DIRECTORY ${CMAKE_SOURCE_DIR}/.git AND NOT EXISTS ${CMAKE_SOURCE_DIR}/.git/hooks/pre-commit)
     message(STATUS "Installing github hook")
     configure_file(${CMAKE_SOURCE_DIR}/tools/git/pre-commit ${CMAKE_SOURCE_DIR}/.git/hooks/pre-commit COPYONLY)
 endif()