diff --git a/drivers/clk/nxp/clk-lpc18xx-cgu.c b/drivers/clk/nxp/clk-lpc18xx-cgu.c
index 44e07a3c253b..ab8741fe57c9 100644
--- a/drivers/clk/nxp/clk-lpc18xx-cgu.c
+++ b/drivers/clk/nxp/clk-lpc18xx-cgu.c
@@ -385,7 +385,7 @@ static int lpc18xx_pll0_determine_rate(struct clk_hw *hw,
 	}
 
 	m = DIV_ROUND_UP_ULL(req->best_parent_rate, req->rate * 2);
-	if (m <= 0 && m > LPC18XX_PLL0_MSEL_MAX) {
+	if (m == 0 || m > LPC18XX_PLL0_MSEL_MAX) {
 		pr_warn("%s: unable to support rate %lu\n", __func__, req->rate);
 		return -EINVAL;
 	}
@@ -408,7 +408,7 @@ static int lpc18xx_pll0_set_rate(struct clk_hw *hw, unsigned long rate,
 	}
 
 	m = DIV_ROUND_UP_ULL(parent_rate, rate * 2);
-	if (m <= 0 && m > LPC18XX_PLL0_MSEL_MAX) {
+	if (m == 0 || m > LPC18XX_PLL0_MSEL_MAX) {
 		pr_warn("%s: unable to support rate %lu\n", __func__, rate);
 		return -EINVAL;
 	}