diff --git a/doc/gmqcc.1 b/doc/gmqcc.1
index 342d995..3f3983a 100644
--- a/doc/gmqcc.1
+++ b/doc/gmqcc.1
@@ -50,6 +50,11 @@ be overwritten.
 List all possible optimizations and the optimization level they're
 activated at.
 .TP
+.BR -q ", " --quiet
+Be less verbose. In particular removes the messages about which files
+are being processed, and which compilation mode is being used, and
+some others. Warnings and errors will of course still be displayed.
+.TP
 .BI -W warning "\fR, " "" -Wno- warning
 Enable or disable a warning.
 .TP