diff --git a/arch/arm/src/samv7/sam_afec.c b/arch/arm/src/samv7/sam_afec.c
index 74e3f6ae889..f169d45be78 100644
--- a/arch/arm/src/samv7/sam_afec.c
+++ b/arch/arm/src/samv7/sam_afec.c
@@ -868,6 +868,7 @@ static int afec_setup(struct adc_dev_s *dev)
 
   if (priv->initialized > 0)
     {
+      priv->initialized++;
       return OK;
     }