diff --git a/src/uterm_input.c b/src/uterm_input.c
index 44758e3..541e4b5 100644
--- a/src/uterm_input.c
+++ b/src/uterm_input.c
@@ -275,6 +275,7 @@ err_free:
 void uterm_input_ref(struct uterm_input *input)
 {
 	if (!input || !input->ref)
+		return;
 
 	++input->ref;
 }