diff --git a/src/at.c b/src/at.c
index 37e3025..228ded6 100644
--- a/src/at.c
+++ b/src/at.c
@@ -232,8 +232,12 @@ static gboolean modem_response(gint fd,
          */
         else if (strstr(response, "QGPSURC: \"xtradataexpire\"") && manager->at_cmds == NULL)
             gnss_upload_assistance_data(manager);
-        /* AT command failed, retry */
-        else if (strstr(response, "ERROR"))
+        /*
+         * AT command failed, retry.
+         * QCFG="fast/poweroff" configuration is only available in
+         * newer firmware versions, skip retrying that specific AT command.
+         */
+        else if (strstr(response, "ERROR") && !strstr(response, "fast/poweroff"))
             retry_at_command(manager);
         /*
          * Successfull AT responses contain 'OK', except for AT+QFUPL which also