diff --git a/CMakeLists.txt b/CMakeLists.txt
index bca24d9de..4eb8e5459 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -502,7 +502,7 @@ if(DFHACK_BUILD_ID STREQUAL "")
 else()
     set(DFHACK_BUILD_ID_PACKAGE "${DFHACK_BUILD_ID}-")
 endif()
-set(CPACK_PACKAGE_FILE_NAME "dfhack-${DFHACK_VERSION}-${DFHACK_BUILD_ID_PACKAGE}${DFHACK_PACKAGE_PLATFORM_NAME}-${DFHACK_BUILD_ARCH}${DFHACK_PACKAGE_SUFFIX}")
+set(CPACK_PACKAGE_FILE_NAME "dfhack-${DFHACK_VERSION}-${DFHACK_BUILD_ID_PACKAGE}${DFHACK_PACKAGE_PLATFORM_NAME}-${DFHACK_BUILD_ARCH}bit${DFHACK_PACKAGE_SUFFIX}")
 include(CPack)
 
 option(DFHACK_INCLUDE_CORE "Download and include Dwarf Fortress core files in DFHack. Useful for local testing, but should not be used in releases." OFF)