diff --git a/src/libnm-core-impl/nm-setting-private.h b/src/libnm-core-impl/nm-setting-private.h
index 6e17a7feae..b10ee30d62 100644
--- a/src/libnm-core-impl/nm-setting-private.h
+++ b/src/libnm-core-impl/nm-setting-private.h
@@ -822,12 +822,12 @@ _nm_properties_override(GArray *properties_override, const NMSettInfoProperty *p
                                       ~(NM_SETTING_PARAM_SECRET | NM_SETTING_PARAM_INFERRABLE      \
                                         | NM_SETTING_PARAM_FUZZY_IGNORE)));                        \
                                                                                                    \
-        _param_spec =                                                                              \
-            g_param_spec_boxed("" prop_name "",                                                    \
-                               "",                                                                 \
-                               "",                                                                 \
-                               G_TYPE_BYTES,                                                       \
-                               G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | (param_flags));        \
+        _param_spec = g_param_spec_boxed("" prop_name "",                                          \
+                                         "",                                                       \
+                                         "",                                                       \
+                                         G_TYPE_BYTES,                                             \
+                                         G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY               \
+                                             | G_PARAM_STATIC_STRINGS | (param_flags));            \
                                                                                                    \
         (obj_properties)[(prop_id)] = _param_spec;                                                 \
                                                                                                    \
diff --git a/src/libnm-core-impl/tests/test-setting.c b/src/libnm-core-impl/tests/test-setting.c
index 4cb627c857..82ff076812 100644
--- a/src/libnm-core-impl/tests/test-setting.c
+++ b/src/libnm-core-impl/tests/test-setting.c
@@ -4919,7 +4919,8 @@ check_done:;
                                      NM_VALUE_TYPE_INT32,
                                      NM_VALUE_TYPE_INT64,
                                      NM_VALUE_TYPE_UINT64,
-                                     NM_VALUE_TYPE_STRING);
+                                     NM_VALUE_TYPE_STRING,
+                                     NM_VALUE_TYPE_BYTES);
 
                 if (NM_FLAGS_HAS(sip->param_spec->flags, G_PARAM_EXPLICIT_NOTIFY)) {
                     g_assert(expected);