diff --git a/ina260.c b/ina260.c
index 0ca74c2..82fd554 100644
--- a/ina260.c
+++ b/ina260.c
@@ -222,7 +222,7 @@ static int ina260_set_register_3bits(struct client_data *cdata, unsigned char re
         if(ina260_read_register(cdata,reg,&value)){
             return 1;
         }
-        mask=~(0x111 << n);
+        mask=~(0x7 << n);
         value &= mask; // clear bits
         value |= value3bits << n;
         if(ina260_write_register(cdata,reg,value)){