diff --git a/cv3/program.c b/cv3/program.c
index 1ce1c6a..01b6a13 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -11,7 +11,7 @@ int main() {
     double result = 0.0;
 
     while (count < SIZE && scanf("%lf", &input) == 1) {
-        if (input = 'x') {
+        if (input == 'x') {
             printf("\n x input \n");
             break;
         }