diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index dff02434ff45..7c66bd73ddfa 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -43,12 +43,17 @@ void mlx5e_ethtool_get_drvinfo(struct mlx5e_priv *priv,
 			       struct ethtool_drvinfo *drvinfo)
 {
 	struct mlx5_core_dev *mdev = priv->mdev;
+	int count;
 
 	strscpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo->driver));
-	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
-		 "%d.%d.%04d (%.16s)",
-		 fw_rev_maj(mdev), fw_rev_min(mdev), fw_rev_sub(mdev),
-		 mdev->board_id);
+	count = snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
+			 "%d.%d.%04d (%.16s)", fw_rev_maj(mdev),
+			 fw_rev_min(mdev), fw_rev_sub(mdev), mdev->board_id);
+	if (count == sizeof(drvinfo->fw_version))
+		snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
+			 "%d.%d.%04d", fw_rev_maj(mdev),
+			 fw_rev_min(mdev), fw_rev_sub(mdev));
+
 	strscpy(drvinfo->bus_info, dev_name(mdev->device),
 		sizeof(drvinfo->bus_info));
 }