diff --git a/shell-integration/ssh/bootstrap.sh b/shell-integration/ssh/bootstrap.sh
index b00ce9652..0f67f8597 100644
--- a/shell-integration/ssh/bootstrap.sh
+++ b/shell-integration/ssh/bootstrap.sh
@@ -338,7 +338,7 @@ esac
 # We need to pass the first argument to the executed program with a leading -
 # to make sure the shell executes as a login shell. Note that not all shells
 # support exec -a so we use the below to try to detect such shells
-if [ -z "$PIPESTATUS" ]; then
+if [ -z "$PIPESTATUS$pipestatus" ]; then
     # the dash shell does not support exec -a and also does not define PIPESTATUS
     execute_with_python
     exec $login_shell "-l"