Index: libcfa/src/concurrency/iocall.cfa
===================================================================
--- libcfa/src/concurrency/iocall.cfa	(revision 49981556d70010c36f072dc3534ff01415259a87)
+++ libcfa/src/concurrency/iocall.cfa	(revision f238769d3bf8e388ed1a7cf198a9e3dbef5ce7df)
@@ -150,5 +150,9 @@
 	extern int fsync(int fd);
 
-	typedef __off64_t off_t;
+	#if __OFF_T_MATCHES_OFF64_T
+		typedef __off64_t off_t;
+	#else
+		typedef __off_t off_t;
+	#endif
 	typedef __off64_t off64_t;
 	extern int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags);