1 files changed, 2 insertions, 1 deletions
diff --git a/progress.c b/progress.c
index 43d9228..2e31bec 100644
--- a/progress.c
+++ b/progress.c
@@ -74,7 +74,8 @@ static void clear_progress_signal(void)
 
 static int is_foreground_fd(int fd)
 {
-	return getpgid(0) == tcgetpgrp(fd);
+	int tpgrp = tcgetpgrp(fd);
+	return tpgrp < 0 || tpgrp == getpgid(0);
 }
 
 static int display(struct progress *progress, unsigned n, const char *done)