diff --git a/doc/configuration.txt b/doc/configuration.txt
index 9d3099570..d1e8fb0f1 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -7841,7 +7841,7 @@ external-check command <command>
   Arguments :
     <command> is the external command to run
 
-  The arguments passed to the to the command are:
+  The arguments passed to the command are:
 
   <proxy_address> <proxy_port> <server_address> <server_port>