diff --git a/cv1/program.c b/cv1/program.c
index d3320d4..c4628e1 100644
--- a/cv1/program.c
+++ b/cv1/program.c
@@ -11,10 +11,8 @@ int main() {
         } else if (text == '\t') {
             putchar('\t');
             continue;
-        } else if (text >= 'a' && text <= 'z') {
-            putchar(text - 'a' + 'A');
-        } else if (text >= 'A' && text <= 'Z') {
-            putchar(text - 'A' + 'a');
+        } else if ((text >= 'a' && text <= 'z') || (text >= 'A' && text <= 'Z')) {
+            putchar(text ^ ' ');
         } else if (text < 32 || text == 127) {
             continue;
         } else {
@@ -25,3 +23,4 @@ int main() {
     printf("\nLines count: %d\n", lines_count);
     return 0;
 }
+