diff --git a/digits_sum.c b/digits_sum.c
index 2ac0700..fcb07e3 100644
--- a/digits_sum.c
+++ b/digits_sum.c
@@ -7,9 +7,9 @@ int main() {
     scanf("%d", &num);
 
     while(num != 0) {
-        digit = num % 100;
+        digit = num % 10;
         sum += digit;
-        num /= 100;
+        num /= 10;
     }
 
     printf("Sum of digits = %d\n", sum);