diff --git a/qerror.c b/qerror.c
index d8eb32998a..75f7b58465 100644
--- a/qerror.c
+++ b/qerror.c
@@ -40,6 +40,10 @@ static const QType qerror_type = {
  * "running out of foo: %(foo)%%"
  */
 static const QErrorStringTable qerror_table[] = {
+    {
+        .error_fmt = QERR_BUS_NOT_FOUND,
+        .desc      = "Bus '%(bus)' not found",
+    },
     {
         .error_fmt = QERR_COMMAND_NOT_FOUND,
         .desc      = "The command %(name) has not been found",
diff --git a/qerror.h b/qerror.h
index a0730edd62..84928080fc 100644
--- a/qerror.h
+++ b/qerror.h
@@ -42,6 +42,9 @@ QError *qobject_to_qerror(const QObject *obj);
 /*
  * QError class list
  */
+#define QERR_BUS_NOT_FOUND \
+    "{ 'class': 'BusNotFound', 'data': { 'bus': %s } }"
+
 #define QERR_COMMAND_NOT_FOUND \
     "{ 'class': 'CommandNotFound', 'data': { 'name': %s } }"