diff --git a/man3/dlopen.3 b/man3/dlopen.3
index 5ec265fd7..54a4c32d1 100644
--- a/man3/dlopen.3
+++ b/man3/dlopen.3
@@ -408,6 +408,11 @@ only when _GNU_SOURCE was defined before including it.
 .\" .in +5
 .\" .B "const char *dlerror(void);"
 .\" .in
+
+Since glibc 2.2.3, 
+.BR atexit (3)
+can be used to register an exit handler that is automatically 
+called when a library is unloaded.
 .SH HISTORY
 The dlopen interface standard comes from SunOS. That system also has
 .BR dladdr (),