diff --git a/drivers/memory/stm32_omm.c b/drivers/memory/stm32_omm.c
index 84eb23c824f5..3599683ab04a 100644
--- a/drivers/memory/stm32_omm.c
+++ b/drivers/memory/stm32_omm.c
@@ -274,6 +274,8 @@ static int stm32_omm_configure(struct device *dev)
 	writel_relaxed(omm->cr, omm->io_base + OMM_CR);
 
 	ret = stm32_omm_set_amcr(dev, true);
+	if (ret && (mux & CR_MUXEN))
+		stm32_omm_toggle_child_clock(dev, false);
 
 error:
 	pm_runtime_put_sync_suspend(dev);