diff --git a/src/cpu/cpu.c b/src/cpu/cpu.c
index 1952b53ecf..dbd09870b5 100644
--- a/src/cpu/cpu.c
+++ b/src/cpu/cpu.c
@@ -716,7 +716,7 @@ cpuModelIsAllowed(const char *model,
  * cpuGetModels:
  *
  * @archName: CPU architecture string
- * @models: where to store the list of supported models
+ * @models: where to store the NULL-terminated list of supported models
  *
  * Fetches all CPU models supported by libvirt on @archName.
  *