diff --git a/drivers/pinctrl/pinctrl-st.c b/drivers/pinctrl/pinctrl-st.c
index 5065611..1845870 100644
--- a/drivers/pinctrl/pinctrl-st.c
+++ b/drivers/pinctrl/pinctrl-st.c
@@ -1250,7 +1250,7 @@
 	func = &info->functions[index];
 	func->name = np->name;
 	func->ngroups = of_get_child_count(np);
-	if (func->ngroups <= 0) {
+	if (func->ngroups == 0) {
 		dev_err(info->dev, "No groups defined\n");
 		return -EINVAL;
 	}