diff --git a/docs/USAGE.md b/docs/USAGE.md
index 402a6c77..557f4062 100644
--- a/docs/USAGE.md
+++ b/docs/USAGE.md
@@ -1221,7 +1221,7 @@ Options:
       Frequency of logging in monitor mode
   --no-remote-delete
       Do not delete local file 'deletes' from OneDrive when using --upload-only
-  --operation-timeout
+  --operation-timeout ARG
       Maximum amount of time (in seconds) an operation is allowed to take
   --print-token
       Print the access token, useful for debugging
diff --git a/src/config.d b/src/config.d
index 07785b20..d75db01b 100644
--- a/src/config.d
+++ b/src/config.d
@@ -802,6 +802,7 @@ void outputLongHelp(Option[] opt)
 		"--monitor-interval",
 		"--monitor-log-frequency",
 		"--monitor-fullscan-frequency",
+		"--operation-timeout",
 		"--remove-directory",
 		"--single-directory",
 		"--skip-dir",