diff --git a/src/control/control.c b/src/control/control.c
index d515cffd..0cb01057 100644
--- a/src/control/control.c
+++ b/src/control/control.c
@@ -2483,7 +2483,7 @@ int snd_ctl_elem_info_get_dimension(const snd_ctl_elem_info_t *obj, unsigned int
 #endif
 {
 	assert(obj);
-	if (idx >= 3)
+	if (idx > 3)
 		return 0;
 	return obj->dimen.d[idx];
 }