diff --git a/CMakeScripts/TestLargefileSensitive.cmake b/CMakeScripts/TestLargefileSensitive.cmake
index b9df081..2e74177 100644
--- a/CMakeScripts/TestLargefileSensitive.cmake
+++ b/CMakeScripts/TestLargefileSensitive.cmake
@@ -6,20 +6,20 @@
 MACRO(TEST_LARGEFILE_SENSITIVE VARIABLE)
   if(NOT DEFINED ${VARIABLE})
     message(STATUS "Testing off_t sizes with or without -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES")
-    set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE_SOURCE -Doff_t_32=off_t)
-    check_type_size( off_t_32 LARGEFILE_SIZEOF_OFF_T_32 )
-    set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE_SOURCE -Doff_t_64=off_t -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES)
-    check_type_size( off_t_64 LARGEFILE_SIZEOF_OFF_T_64 )
+    set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE_SOURCE -Doff_t_DEF=off_t)
+    check_type_size( off_t_DEF LARGEFILE_SIZEOF_OFF_T_DEF )
+    set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE_SOURCE -Doff_t_D64=off_t -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES)
+    check_type_size( off_t_D64 LARGEFILE_SIZEOF_OFF_T_D64 )
     set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE)
     check_type_size( off64_t LARGEFILE_SIZEOF_OFF64_T )
 
     SET(${VARIABLE} 0 CACHE INTERNAL "System has largefile support" FORCE)
     SET(${VARIABLE}_SENSITIVE 0 CACHE INTERNAL "System is largefile sensitive" FORCE)
     SET(${VARIABLE}_FLAGS "" CACHE INTERNAL "Compiler flags for largefile support" FORCE)
-    if(LARGEFILE_SIZEOF_OFF_T_32)
-       message(STATUS "Testing off_t found sizeof(off_t)=${LARGEFILE_SIZEOF_OFF_T_32} and BITS=64 sizeof(off_t)=${LARGEFILE_SIZEOF_OFF_T_64}")
+    if(LARGEFILE_SIZEOF_OFF_T_DEF)
+       message(STATUS "Testing off_t found sizeof(off_t)=${LARGEFILE_SIZEOF_OFF_T_DEF} and BITS=64 sizeof(off_t)=${LARGEFILE_SIZEOF_OFF_T_D64}")
        SET(${VARIABLE} 1 CACHE INTERNAL "System has largefile support" FORCE)
-      if(NOT LARGEFILE_SIZEOF_OFF_T_32 EQUAL LARGEFILE_SIZEOF_OFF_T_64)
+      if(NOT LARGEFILE_SIZEOF_OFF_T_DEF EQUAL LARGEFILE_SIZEOF_OFF_T_D64)
         SET(${VARIABLE}_SENSITIVE 1 CACHE INTERNAL "System is largefile sensitive" FORCE)
         message(STATUS "System is large file sensitive - need to rename symbols to xx64")
         SET(${VARIABLE}_FLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES)