diff --git a/src/backend/utils/activity/wait_event_names.txt b/src/backend/utils/activity/wait_event_names.txt
index 560659f9568..bafdd7d2e96 100644
--- a/src/backend/utils/activity/wait_event_names.txt
+++ b/src/backend/utils/activity/wait_event_names.txt
@@ -294,7 +294,7 @@ Section: ClassName - WaitEventBuffer
 BUFFER_CLEANUP "Waiting to acquire an exclusive pin on a buffer. Buffer pin waits can be protracted if another process holds an open cursor that last read data from the buffer in question."
 BUFFER_SHARED  "Waiting to acquire a shared lock on a buffer."
 BUFFER_SHARE_EXCLUSIVE "Waiting to acquire a share exclusive lock on a buffer."
-BUFFER_EXCLUSIVE       "Waiting to acquire a exclusive lock on a buffer."
+BUFFER_EXCLUSIVE       "Waiting to acquire an exclusive lock on a buffer."

 ABI_compatibility: