diff --git a/certbot-dns-dnsimple/snap/hooks/post-refresh b/certbot-dns-dnsimple/snap/hooks/post-refresh
index 7be4472a2..ffab9430f 100644
--- a/certbot-dns-dnsimple/snap/hooks/post-refresh
+++ b/certbot-dns-dnsimple/snap/hooks/post-refresh
@@ -1,7 +1,7 @@
 #!/bin/sh -e
 
-snapctl get first-install
-if [ "$?" -eq "1"]; then
+first_install=$(snapctl get first-install)
+if [ "$first_install" -ne "false"]; then
     snapctl set first-install="false"
     exit 0
 fi