diff --git a/progress.go b/progress.go
index aa67dca..b7ede07 100644
--- a/progress.go
+++ b/progress.go
@@ -307,7 +307,11 @@
 			return err
 		}
 	} else {
-		width = s.reqWidth
+		if s.reqWidth > 0 {
+			width = s.reqWidth
+		} else {
+			width = 100
+		}
 		height = 100
 	}