diff -up ext4magic-0.3.2/src/journal.c.unsigned ext4magic-0.3.2/src/journal.c
--- ext4magic-0.3.2/src/journal.c.unsigned	2014-09-03 00:11:17.000000000 +0200
+++ ext4magic-0.3.2/src/journal.c	2020-05-29 14:01:36.901124887 +0200
@@ -856,7 +856,7 @@ int init_journal(void)
 	pt = pt_buff ;
 	pt_count = 0;
 	if (pt_buff == NULL) {
-		fprintf(stderr,"Error: can't allocate %u Memory\n",maxlen * sizeof(journal_descriptor_tag_t));
+		fprintf(stderr,"Error: can't allocate %lu Memory\n", maxlen * sizeof(journal_descriptor_tag_t));
 		goto errout;
 	}
 	ptl = (__u32*)(pt_buff + (maxlen * sizeof(journal_descriptor_tag_t)));