diff --git a/man3/malloc_trim.3 b/man3/malloc_trim.3
index 74ef07e3d..769f1c1c4 100644
--- a/man3/malloc_trim.3
+++ b/man3/malloc_trim.3
@@ -57,6 +57,19 @@ or 0 if it was not possible to release any memory.
 No errors are defined.
 .\" .SH VERSIONS
 .\" Available already in glibc 2.0, possibly earlier
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.BR malloc_trim ()
+T}	Thread safety	MT-Safe
+.TE
+
 .SH CONFORMING TO
 This function is a GNU extension.
 .SH NOTES