diff --git a/src/fix/rgbfix.1 b/src/fix/rgbfix.1
index 713a9a73..fdd462e7 100644
--- a/src/fix/rgbfix.1
+++ b/src/fix/rgbfix.1
@@ -15,7 +15,7 @@
 .Op Fl p Ar pad_value
 .Op Fl r Ar ram_size
 .Op Fl t Ar title_str
-.Ar file Ns Op .gb
+.Ar file
 .\" SECTION
 .Sh DESCRIPTION
 The