diff --git a/kernel/main.c b/kernel/main.c
index 713b65e6..02ab5ab3 100644
--- a/kernel/main.c
+++ b/kernel/main.c
@@ -162,7 +162,7 @@ int main(void)
 		
 	system_calibration();
 
-	kprintf("Processor frequency: %d MHz\n", get_cpu_frequency()/1000000);
+	kprintf("Processor frequency: %u MHz\n", get_cpu_frequency()/1000000);
 	kprintf("Total memory: %u MBytes\n", atomic_int32_read(&total_pages)/((1024*1024)/PAGE_SIZE));
 	kprintf("Current allocated memory: %u KBytes\n", atomic_int32_read(&total_allocated_pages)*(PAGE_SIZE/1024));
 	kprintf("Current available memory: %u MBytes\n", atomic_int32_read(&total_available_pages)/((1024*1024)/PAGE_SIZE));