diff --git a/cmake/package_name.cmake b/cmake/package_name.cmake
index d14bf1f526e..ce13a446fe6 100644
--- a/cmake/package_name.cmake
+++ b/cmake/package_name.cmake
@@ -110,7 +110,11 @@ IF(NOT VERSION)
         SET(DEFAULT_MACHINE "x86")
       ENDIF()
     ENDIF()
-   
+
+    IF(NOT DEFAULT_MACHINE MATCHES "64" AND 64BIT)
+      SET(DEFAULT_MACHINE "${DEFAULT_MACHINE}-64bit")
+    ENDIF()
+
     IF(NOT PLATFORM)
       SET(PLATFORM ${DEFAULT_PLATFORM})
     ENDIF()