diff --git a/arch/arm/src/imxrt/imxrt_adc.c b/arch/arm/src/imxrt/imxrt_adc.c
index 553a4f88dc7..7ffd5619893 100644
--- a/arch/arm/src/imxrt/imxrt_adc.c
+++ b/arch/arm/src/imxrt/imxrt_adc.c
@@ -513,6 +513,7 @@ static int adc_setup(struct adc_dev_s *dev)
 
   if (priv->initialized > 0)
     {
+      priv->initialized++;
       return OK;
     }