diff --git a/board/o2dnt/flash.c b/board/o2dnt/flash.c
index 037d287..349086f 100644
--- a/board/o2dnt/flash.c
+++ b/board/o2dnt/flash.c
@@ -411,7 +411,7 @@
 
 	/* Check if Flash is (sufficiently) erased */
 	if ((*addr & data) != data) {
-		printf ("not erased at %08lx (%lx)\n", (ulong) addr, *addr);
+		printf ("not erased at %08lx (%x)\n", (ulong) addr, *addr);
 		return (2);
 	}
 	/* Disable interrupts which might cause a timeout here */