diff --git a/lib/progbar.c b/lib/progbar.c
index fde2e70..9ecc803 100644
--- a/lib/progbar.c
+++ b/lib/progbar.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <sys/time.h>
 #include <string.h>
+#include <assert.h>
 
 #include "progbar.h"
 
@@ -37,6 +38,8 @@ int progbar_update(struct progbar * ctx, const char *label, int curr, int max,
 	struct timeval	tv;
 	int dpywidth;
 	int fixed_percent;
+	assert (curr >= 0);
+	assert (max > 0);
 	float percent = ((float) curr) / ((float) max) * 100;
 
 	if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
diff --git a/reiserfscore/journal.c b/reiserfscore/journal.c
index a3ebcde..00e1939 100644
--- a/reiserfscore/journal.c
+++ b/reiserfscore/journal.c
@@ -818,13 +818,12 @@ int replay_journal (reiserfs_filsys_t * fs)
     control.trans_id = get_jh_last_flushed (j_head);
     control.desc_blocknr = get_jh_replay_start_offset (j_head);
 
-    if (!get_boundary_transactions (fs, &cur, &newest)) {
+    trans_count = get_boundary_transactions (fs, &cur, &newest);
+    if (!trans_count) {
 	reiserfs_warning (stderr, "No transactions found\n");
 	return 0;
     }
 
-    trans_count = newest.trans_id - cur.trans_id;
-
     /*  Smth strange with journal header or journal. We cannot say for sure what was the last 
 	replaied transaction, but relying on JH data is preferable. */