diff --git a/src/core/devices/nm-device.c b/src/core/devices/nm-device.c
index aa81c1455a..ba4969d266 100644
--- a/src/core/devices/nm-device.c
+++ b/src/core/devices/nm-device.c
@@ -14851,7 +14851,7 @@ _nm_device_check_connection_available(NMDevice                      *self,
             if (!nm_device_get_managed(self, TRUE)) {
                 /* device is strictly unmanaged by authoritative unmanaged reasons. */
                 nm_utils_error_set_literal(error,
-                                           NM_UTILS_ERROR_CONNECTION_AVAILABLE_UNMANAGED_DEVICE,
+                                           NM_UTILS_ERROR_CONNECTION_AVAILABLE_STRICTLY_UNMANAGED_DEVICE,
                                            "device is strictly unmanaged");
                 return FALSE;
             }
diff --git a/src/libnm-glib-aux/nm-shared-utils.h b/src/libnm-glib-aux/nm-shared-utils.h
index c1325a8c41..66ded655e2 100644
--- a/src/libnm-glib-aux/nm-shared-utils.h
+++ b/src/libnm-glib-aux/nm-shared-utils.h
@@ -975,6 +975,7 @@ typedef enum {
      * message from the device that returned the *highest* error code,
      * in the hope that this message makes the most sense for the caller.
      * */
+    NM_UTILS_ERROR_CONNECTION_AVAILABLE_STRICTLY_UNMANAGED_DEVICE,
     NM_UTILS_ERROR_CONNECTION_AVAILABLE_INCOMPATIBLE,
     NM_UTILS_ERROR_CONNECTION_AVAILABLE_UNMANAGED_DEVICE,
     NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY,