diff --git a/CMakeLists.txt b/CMakeLists.txt
index a127bcc..503906b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -841,7 +841,9 @@ CHECK_TYPE_SIZE("float"		 SIZEOF_FLOAT)
 CHECK_TYPE_SIZE("int"		 SIZEOF_INT)
 CHECK_TYPE_SIZE("long"		 SIZEOF_LONG)
 CHECK_TYPE_SIZE("long long"	 SIZEOF_LONG_LONG)
+SET(CMAKE_REQUIRED_DEFINITIONS -D_FILE_OFFSET_BITS=${_FILE_OFFSET_BITS})
 CHECK_TYPE_SIZE("off_t"		 SIZEOF_OFF_T)
+SET(CMAKE_REQUIRED_DEFINITIONS)
 CHECK_TYPE_SIZE("off64_t"        SIZEOF_OFF64_T)
 CHECK_TYPE_SIZE("short"		 SIZEOF_SHORT)
 CHECK_TYPE_SIZE("size_t"	 SIZEOF_SIZE_T)