diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c
index e14096deb4..fdca6ca659 100644
--- a/hw/display/cirrus_vga.c
+++ b/hw/display/cirrus_vga.c
@@ -2105,7 +2105,7 @@ static void cirrus_vga_mem_write(void *opaque,
     } else {
         qemu_log_mask(LOG_GUEST_ERROR,
                       "cirrus: mem_writeb 0x" TARGET_FMT_plx " "
-                      "value 0x%02" PRIu64 "\n", addr, mem_value);
+                      "value 0x%02" PRIx64 "\n", addr, mem_value);
     }
 }