diff --git a/a1/program.c b/a1/program.c
index 1d6c6e9..052a19e 100644
--- a/a1/program.c
+++ b/a1/program.c
@@ -7,7 +7,7 @@ void funkcia (int c, int *line_count) {
         putchar(c);
     } else if (isalpha(c)) {
         putchar(islower(c) ? toupper(c) : tolower(c));
-    } else if (isprint(c)) {
+    } else if (isprint(c) || c == '\t') {
         putchar(c);
     }
 }
diff --git a/a1/program.exe b/a1/program.exe
index 5be08d3..269c849 100644
Binary files a/a1/program.exe and b/a1/program.exe differ