diff --git a/examples/printf.c b/examples/printf.c
index 045601f..6dc45fd 100644
--- a/examples/printf.c
+++ b/examples/printf.c
@@ -20,8 +20,8 @@ int main()
 {
     memset(buffer, '\0', sizeof(buffer));
     buffer_index = 0;
-    kernaux_printf(my_putchar, "Hello, %s!", "Alex");
-    assert(strcmp(buffer, "Hello, Alex!") == 0);
+    kernaux_printf(my_putchar, "Hello, %s! Session id: %u.", "Alex", 123);
+    assert(strcmp(buffer, "Hello, Alex! Session id: 123.") == 0);
 
     printf("OK!\n");