diff --git a/common.h b/common.h
index 402be1e4139516671351556ce909031a91500a85..95efeaa2cc23ca201ebb5798c3a4f4ce5b32033b 100644
--- a/common.h
+++ b/common.h
@@ -6,6 +6,9 @@
 
 /* Compile-time configuration area. */
 
+/* Contact of the network administrators. */
+#define ADMINCONTACT "<wizards@kam.mff.cuni.cz>"
+
 /* Default memory split policy. Memory is split between
  * user and computations by split_ratio, but so that neither
  * has reserved less than minfree (in case of too little memory,
diff --git a/compctl.c b/compctl.c
index 80b150babe93610826772f03f63e81daa8d4018a..9c6b82119001e1afb1a1800ccfc172786cd58516 100644
--- a/compctl.c
+++ b/compctl.c
@@ -92,7 +92,7 @@ help(FILE *f)
 {
 	fputs("compctl - Computations under control\n\n"
 #include "help-in-quotes"
-	"Contact <wizards@kam.mff.cuni.cz> with bug reports and comments.\n", f);
+	"Contact " ADMINCONTACT " with bug reports and comments.\n", f);
 }
 
 int