diff --git a/include/printk.h b/include/printk.h
index aaad075..ab2c64c 100644
--- a/include/printk.h
+++ b/include/printk.h
@@ -119,7 +119,7 @@
 		int prefix_type, int rowsize, int groupsize,
 		const void *buf, size_t len, bool ascii)
 {
-	memory_display(buf, 0, len, 4, 0);
+	memory_display(buf, 0, len, groupsize, 0);
 }
 
 struct log_entry {