diff --git a/README.md b/README.md
index 9931ba7..503fc3c 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ docker-stack-wait.sh [opts] stack_name
              may be passed multiple times, do not include the stack name prefix
   -r:        treat a rollback as successful
   -s sec:    frequency to poll service state (default 5 sec)
-  -t sec:    timeout to stop waiting
+  -t sec:    timeout to stop waiting (default 3600 sec)
 ```
 
 ## Usage as container
diff --git a/docker-stack-wait.sh b/docker-stack-wait.sh
index 704c252..3cf6c99 100755
--- a/docker-stack-wait.sh
+++ b/docker-stack-wait.sh
@@ -26,7 +26,7 @@ usage() {
   echo "             may be passed multiple times, do not include the stack name prefix"
   echo "  -r:        treat a rollback as successful"
   echo "  -s sec:    frequency to poll service state (default $opt_s sec)"
-  echo "  -t sec:    timeout to stop waiting"
+  echo "  -t sec:    timeout to stop waiting (default $opt_t sec)"
   [ "$opt_h" = "1" ] && exit 0 || exit 1
 }
 check_timeout() {