diff --git a/qerror.c b/qerror.c
index 2f657f4f7b..6c2aba08c1 100644
--- a/qerror.c
+++ b/qerror.c
@@ -80,6 +80,10 @@ static const QErrorStringTable qerror_table[] = {
         .error_fmt = QERR_INVALID_BLOCK_FORMAT,
         .desc      = "Invalid block format %(name)",
     },
+    {
+        .error_fmt = QERR_INVALID_CPU_INDEX,
+        .desc      = "Invalid CPU index",
+    },
     {
         .error_fmt = QERR_INVALID_PARAMETER,
         .desc      = "Invalid parameter %(name)",
diff --git a/qerror.h b/qerror.h
index ee59615bd2..57c5b9749b 100644
--- a/qerror.h
+++ b/qerror.h
@@ -70,6 +70,9 @@ QError *qobject_to_qerror(const QObject *obj);
 #define QERR_INVALID_BLOCK_FORMAT \
     "{ 'class': 'InvalidBlockFormat', 'data': { 'name': %s } }"
 
+#define QERR_INVALID_CPU_INDEX \
+    "{ 'class': 'InvalidCPUIndex', 'data': {} }"
+
 #define QERR_INVALID_PARAMETER \
     "{ 'class': 'InvalidParameter', 'data': { 'name': %s } }"