diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c
index f33e3fc63d..07c8801387 100644
--- a/hw/input/pckbd.c
+++ b/hw/input/pckbd.c
@@ -22,6 +22,7 @@
  * THE SOFTWARE.
  */
 #include "qemu/osdep.h"
+#include "qemu/log.h"
 #include "hw/hw.h"
 #include "hw/isa/isa.h"
 #include "hw/i386/pc.h"
@@ -308,7 +309,8 @@ static void kbd_write_command(void *opaque, hwaddr addr,
         /* ignore that */
         break;
     default:
-        fprintf(stderr, "qemu: unsupported keyboard cmd=0x%02x\n", (int)val);
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "unsupported keyboard cmd=0x%02" PRIx64 "\n", val);
         break;
     }
 }