diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9e3be953..e0b76374 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -179,7 +179,7 @@ set(CPACK_PACKAGE_VENDOR "X-L-R-G-B")
 include(InstallRequiredSystemLibraries)
 
 set(CPACK_PACKAGE_NAME "R-Type")
-set(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${CPACK_SYSTEM_NAME}")
+set(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${CMAKE_SYSTEM_NAME}")
 set(CPACK_PACKAGE_VERSION_MAJOR "${PROJECT_VERSION_MAJOR}")
 set(CPACK_PACKAGE_VERSION_MINOR "${PROJECT_VERSION_MINOR}")
 set(CPACK_PACKAGE_VERSION_PATCH "${PROJECT_VERSION_PATCH}")