diff --git a/configure.ac b/configure.ac
index a5689c3944c205273cfb21a3fade0274f4666fb1..9ded86e6c70d1c3973473978be5d35f12144f941 100644
--- a/configure.ac
+++ b/configure.ac
@@ -291,6 +291,9 @@ AC_PROG_OBJC
 dnl ===========================================================================
 dnl Set GCC compiler flags
 
+# Use 64-bit off_t on 32-bit Linux
+AC_SYS_LARGEFILE
+
 if [ test "${GCC}" = "yes" ]
 then
   # Enable common warnings flags