sumif off of a single cell range

This one is probably easy to do.

Basicly i have row of numbers. I want the numbers to give me a sum total if a cell that is not in the row contains an "x"

Row of number from A1:A5 each cell has the number 1 in the cell

if there is a x in cell A2 i would like to get the sum of the numbers in A1:A5 in cell A3.


was trying =SUMIF(A2,"x",A1:E1) this is the formula in cell A3

I am expecting the result of 5, this formula returns the value of 1 since there is only 1 x in cell A2.

Thoughts?
Thanks