diff --git a/DOCS/man/en/mplayer.1 b/DOCS/man/en/mplayer.1
index 3478302129..19ebcaa40d 100644
--- a/DOCS/man/en/mplayer.1
+++ b/DOCS/man/en/mplayer.1
@@ -9076,7 +9076,7 @@ The mapping is approximately H264QP = 12 + 6*log2(MPEGQP).
 For example, MPEG at QP=2 is equivalent to H.264 at QP=18.
 .
 .TP
-.B crf=<1\-50>
+.B crf=<1.0\-50.0>
 Enables constant quality mode, and selects the quality.
 The scale is similar to QP.
 Like the bitrate-based modes, this allows each frame to use a