diff --git a/src/filetransfer/v3270ftprogress.c b/src/filetransfer/v3270ftprogress.c
index 72d0830..2f8baba 100644
--- a/src/filetransfer/v3270ftprogress.c
+++ b/src/filetransfer/v3270ftprogress.c
@@ -485,7 +485,9 @@ void v3270ftprogress_update(GtkWidget *widget, unsigned long current, unsigned l
 				char buffer[40];
 				double	seconds = ((double) remaining) / kbytes_sec;
 				time_t 	eta		= time(0) + ((time_t) seconds);
-				strftime(buffer, 39, "%H:%M:%S", localtime(&eta));
+				struct tm tm;
+
+				strftime(buffer, 39, "%H:%M:%S", localtime_r(&eta,&tm));
 
 				gtk_entry_set_text(dialog->info[PROGRESS_FIELD_ETA],buffer);
 
diff --git a/src/filetransfer/worker.c b/src/filetransfer/worker.c
index 5a502be..246525c 100644
--- a/src/filetransfer/worker.c
+++ b/src/filetransfer/worker.c
@@ -455,7 +455,8 @@
 			char buffer[40];
 			double	seconds = ((double) remaining) / update->kbytes_sec;
 			time_t 	eta		= time(NULL) + ((time_t) seconds);
-			strftime(buffer, 39, "%H:%M:%S", localtime(&eta));
+			struct tm tm;
+			strftime(buffer, 39, "%H:%M:%S", localtime_r(&eta,&tm));
 
 			gtk_entry_set_text(update->worker->field[PROGRESS_FIELD_ETA],buffer);
 
--
libgit2 0.21.2