diff --git a/src/include/interface.h b/src/include/interface.h
index e2d36896b..2e19f0246 100644
--- a/src/include/interface.h
+++ b/src/include/interface.h
@@ -10,7 +10,7 @@
 //
 /**@name interface.h	-	The user interface header file. */
 //
-//	(c) Copyright 1998-2002 by Lutz Sammer
+//	(c) Copyright 1998-2003 by Lutz Sammer
 //
 //	FreeCraft is free software; you can redistribute it and/or modify
 //	it under the terms of the GNU General Public License as published
@@ -403,6 +403,8 @@ extern int ButtonCheckUnitsOr(const Unit*,const ButtonAction*);
 extern int ButtonCheckUnitsAnd(const Unit*,const ButtonAction*);
     /// Check if have network play
 extern int ButtonCheckNetwork(const Unit*,const ButtonAction*);
+    /// Check if don't have network play
+extern int ButtonCheckNoNetwork(const Unit*,const ButtonAction*);
     /// Check if unit isn't working (train,upgrade,research)
 extern int ButtonCheckNoWork(const Unit*,const ButtonAction*);
     /// Check if unit isn't researching or upgrading
diff --git a/src/ui/button_checks.cpp b/src/ui/button_checks.cpp
index 459f78f64..8867f4d27 100644
--- a/src/ui/button_checks.cpp
+++ b/src/ui/button_checks.cpp
@@ -10,7 +10,7 @@
 //
 /**@name button_checks.c	-	The button checks. */
 //
-//	(c) Copyright 1999-2001 by Lutz Sammer, Vladi Belperchinov-Shabanski
+//	(c) Copyright 1999-2003 by Lutz Sammer, Vladi Belperchinov-Shabanski
 //
 //	FreeCraft is free software; you can redistribute it and/or modify
 //	it under the terms of the GNU General Public License as published
@@ -156,6 +156,20 @@ global int ButtonCheckNetwork(const Unit* unit __attribute__((unused)),const But
     return NetworkFildes!=-1;
 }
 
+/**
+**	Check if network play is disabled.
+**
+**	@param unit	Pointer to unit for button.
+**	@param button	Pointer to button to check/enable.
+**	@return		True if disabled.
+**
+**	NOTE: this check could also be moved into intialisation.
+*/
+global int ButtonCheckNoNetwork(const Unit* unit __attribute__((unused)),const ButtonAction* button __attribute__((unused)))
+{
+    return NetworkFildes==-1;
+}
+
 /**
 **	Check for button enabled, if the unit isn't working.
 **		Working is training, upgrading, researching.
diff --git a/src/ui/script_ui.cpp b/src/ui/script_ui.cpp
index 8bdf3f110..2f2dd41a5 100644
--- a/src/ui/script_ui.cpp
+++ b/src/ui/script_ui.cpp
@@ -10,7 +10,7 @@
 //
 /**@name ccl_ui.c	-	The ui ccl functions. */
 //
-//	(c) Copyright 1999-2002 by Lutz Sammer
+//	(c) Copyright 1999-2003 by Lutz Sammer
 //
 //	FreeCraft is free software; you can redistribute it and/or modify
 //	it under the terms of the GNU General Public License as published
@@ -3160,6 +3160,8 @@ local SCM CclDefineButton(SCM list)
 		ba.Allowed=ButtonCheckUnitsAnd;
 	    } else if( gh_eq_p(value,gh_symbol2scm("check-network")) ) {
 		ba.Allowed=ButtonCheckNetwork;
+	    } else if( gh_eq_p(value,gh_symbol2scm("check-no-network")) ) {
+		ba.Allowed=ButtonCheckNoNetwork;
 	    } else if( gh_eq_p(value,gh_symbol2scm("check-no-work")) ) {
 		ba.Allowed=ButtonCheckNoWork;
 	    } else if( gh_eq_p(value,gh_symbol2scm("check-no-research")) ) {