diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2
index eaeb9c013..3f40fada2 100644
--- a/man2/perf_event_open.2
+++ b/man2/perf_event_open.2
@@ -2052,7 +2052,7 @@ Synchronous abort (related to the reported instruction).
 Asynchronous abort (not related to the reported instruction).
 .TP
 .B PERF_TXN_RETRY
-retryable abort (retrying the transaction may have succeeded).
+Retryable abort (retrying the transaction may have succeeded).
 .TP
 .B PERF_TXN_CONFLICT
 Abort due to memory conflicts with other threads.