diff --git a/pinentry-dmenu.1 b/pinentry-dmenu.1
index 67a982c..efd1679 100644
--- a/pinentry-dmenu.1
+++ b/pinentry-dmenu.1
@@ -37,9 +37,11 @@ It is not intended to be invoked directly.
 \f[B]monitor\f[R] = \f[I]-1\f[R]
 pinentry-dmenu is displayed on the monitor number supplied.
 Monitor numbers are starting from 0.
+Value -1 for focused monitor.
 .TP
 \f[B]center_width\f[R] = \f[I]1024\f[R]
 Defines the width for the `center' menu.
+Value -1 for full width.
 .TP
 \f[B]embedded\f[R] = \f[I]false\f[R]
 Embed into window.
diff --git a/pinentry-dmenu.1.md b/pinentry-dmenu.1.md
index fe21451..ef440b0 100644
--- a/pinentry-dmenu.1.md
+++ b/pinentry-dmenu.1.md
@@ -17,10 +17,10 @@ The configuration is placed in *~/.gnupg/pinentry-dmenu.conf*. You can change th
 # OPTIONS
 
 **monitor** = *-1*
-: pinentry-dmenu is displayed on the monitor number supplied. Monitor numbers are starting from 0.
+: pinentry-dmenu is displayed on the monitor number supplied. Monitor numbers are starting from 0. Value -1 for focused monitor.
 
 **center_width** = *1024*
-: Defines the width for the 'center' menu.
+: Defines the width for the 'center' menu. Value -1 for full width.
 
 **embedded** = *false*
 : Embed into window.