diff --git a/drivers/video/metronomefb.c b/drivers/video/metronomefb.c
index afeed0611e3e0896cc28e05d355a9fdad73a6d08..df1f757a6161cde2f7d189be4501567af96fd6f2 100644
--- a/drivers/video/metronomefb.c
+++ b/drivers/video/metronomefb.c
@@ -188,7 +188,7 @@ static int __devinit load_waveform(u8 *mem, size_t size, int m, int t,
 		epd_frame_table[par->dt].wfm_size = user_wfm_size;
 
 	if (size != epd_frame_table[par->dt].wfm_size) {
-		dev_err(dev, "Error: unexpected size %d != %d\n", size,
+		dev_err(dev, "Error: unexpected size %Zd != %d\n", size,
 					epd_frame_table[par->dt].wfm_size);
 		return -EINVAL;
 	}