diff --git a/pkg/h264/dtsextractor.go b/pkg/h264/dtsextractor.go
index 88ec3951..96faf38a 100644
--- a/pkg/h264/dtsextractor.go
+++ b/pkg/h264/dtsextractor.go
@@ -299,7 +299,7 @@ func (d *DTSExtractor) Extract(nalus [][]byte, pts time.Duration) (time.Duration
 	}
 
 	if d.prevDTS != nil && dts <= *d.prevDTS {
-		return 0, fmt.Errorf("DTS is not monotonically increasing (was %v, now is %v)",
+		return 0, fmt.Errorf("DTS is not monotonically increasing, was %v, now is %v",
 			*d.prevDTS, dts)
 	}