diff --git a/README.md b/README.md
index b86e3ba..a23df49 100644
--- a/README.md
+++ b/README.md
@@ -101,9 +101,9 @@ docker run -d \
 | GIT_SYNC_PERMISSIONS            | `--change-permissions`     | the file permissions to apply to the checked-out files (0 will not change permissions at all)                                                                                                                                                 | 0                             |
 | GIT_SYNC_SPARSE_CHECKOUT_FILE   | `--sparse-checkout-file`         | the location of an optional [sparse-checkout](https://git-scm.com/docs/git-sparse-checkout#_sparse_checkout) file, same syntax as a .gitignore file.                                                                    | ""                             |
 | GIT_SYNC_HOOK_COMMAND           | `--sync-hook-command`      | DEPRECATED: use --exechook-command instead | ""                            |
-| GIT_EXECHOOK_COMMAND           | `--exechook-command`      | the command executed with the syncing repository as its working directory after syncing a new hash of the remote repository. it is subject to the sync time out and will extend period between syncs. (doesn't support the command arguments) | ""                            |
-| GIT_EXECHOOK_TIMEOUT   | `--exechook-timeout`        | the timeout for the sync hook command                                                                                                                                                                                                         | 30 (seconds)                    |
-| GIT_EXECHOOK_BACKOFF   | `--exechook-backoff`        | the time to wait before retrying a failed sync hook command   
+| GIT_SYNC_EXECHOOK_COMMAND           | `--exechook-command`      | the command executed with the syncing repository as its working directory after syncing a new hash of the remote repository. it is subject to the sync time out and will extend period between syncs. (doesn't support the command arguments) | ""                            |
+| GIT_SYNC_EXECHOOK_TIMEOUT   | `--exechook-timeout`        | the timeout for the sync hook command                                                                                                                                                                                                         | 30 (seconds)                    |
+| GIT_SYNC_EXECHOOK_BACKOFF   | `--exechook-backoff`        | the time to wait before retrying a failed sync hook command   
 | GIT_SYNC_WEBHOOK_URL            | `--webhook-url`            | the URL for a webook notification when syncs complete                                                                                                                                                                                         | ""                            |
 | GIT_SYNC_WEBHOOK_METHOD         | `--webhook-method`         | the HTTP method for the webhook                                                                                                                                                                                                               | "POST"                        |
 | GIT_SYNC_WEBHOOK_SUCCESS_STATUS | `--webhook-success-status` | the HTTP status code indicating a successful webhook (-1 disables success checks to make webhooks fire-and-forget)                                                                                                                            | 200                           |
diff --git a/cmd/git-sync/main.go b/cmd/git-sync/main.go
index 0b2c136..cf220ab 100644
--- a/cmd/git-sync/main.go
+++ b/cmd/git-sync/main.go
@@ -77,12 +77,12 @@ var flChmod = flag.Int("change-permissions", envInt("GIT_SYNC_PERMISSIONS", 0),
 	"the file permissions to apply to the checked-out files (0 will not change permissions at all)")
 var flSyncHookCommand = flag.String("sync-hook-command", envString("GIT_SYNC_HOOK_COMMAND", ""),
 	"DEPRECATED: use --exechook-command instead")
-var flExechookCommand = flag.String("exechook-command", envString("GIT_EXECHOOK_COMMAND", ""),
+var flExechookCommand = flag.String("exechook-command", envString("GIT_SYNC_EXECHOOK_COMMAND", ""),
 	"a command to be executed (without arguments, with the syncing repository as its working directory) after syncing a new hash of the remote repository. "+
 		"It is subject to --timeout out and will extend period between syncs.")
-var flExechookTimeout = flag.Duration("exechook-timeout", envDuration("GIT_EXECHOOK_TIMEOUT", time.Second*30),
+var flExechookTimeout = flag.Duration("exechook-timeout", envDuration("GIT_SYNC_EXECHOOK_TIMEOUT", time.Second*30),
 	"the timeout for the command")
-var flExechookBackoff = flag.Duration("exechook-backoff", envDuration("GIT_EXECHOOK_BACKOFF", time.Second*3),
+var flExechookBackoff = flag.Duration("exechook-backoff", envDuration("GIT_SYNC_EXECHOOK_BACKOFF", time.Second*3),
 	"the time to wait before retrying a failed command")
 var flSparseCheckoutFile = flag.String("sparse-checkout-file", envString("GIT_SYNC_SPARSE_CHECKOUT_FILE", ""),
 	"the path to a sparse-checkout file.")