diff --git a/man2/signalfd.2 b/man2/signalfd.2
index 71937c4bc..52b4ea047 100644
--- a/man2/signalfd.2
+++ b/man2/signalfd.2
@@ -191,8 +191,9 @@ struct signalfd_siginfo {
                               (SIGCHLD) */
     uint64_t ssi_addr;     /* Address that generated signal
                               (for hardware-generated signals) */
-.\" FIXME Since Linux 2.6.37 there is 'uint16_t ssi_addr_lsb'
-.\" in the signalfd_siginfo structure. This needs to be documented.
+    uint16_t ssi_addr_lsb; /* Least significant bit of address
+                              (SIGBUS; since Linux 2.6.37)
+.\" ssi_addr_lsb: commit b8aeec34175fc8fe8b0d40efea4846dfc1ba663e
     uint8_t  pad[\fIX\fP];       /* Pad size to 128 bytes (allow for
                               additional fields in the future) */
 };