diff --git a/CMakeLists.txt b/CMakeLists.txt
index 43fb9791..7207c946 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,6 +8,7 @@ function(git_tag_version VERSION_RESULT)
 	endif()
 	execute_process(
 		COMMAND ${GIT_EXECUTABLE} describe --tags --abbrev=0
+		WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
 		OUTPUT_VARIABLE LAST_TAG
 		RESULT_VARIABLE RESULT
 		ERROR_QUIET
@@ -18,6 +19,7 @@ function(git_tag_version VERSION_RESULT)
 	endif()
 	execute_process(
 		COMMAND ${GIT_EXECUTABLE} rev-list ${LAST_TAG}..HEAD --count
+		WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
 		OUTPUT_VARIABLE COMMIT_COUNT_SINCE_TAG
 		RESULT_VARIABLE RESULT
 		ERROR_QUIET