diff --git a/base/doc/usrguide.tex b/base/doc/usrguide.tex
index ae2e04fd6..7234ac821 100644
--- a/base/doc/usrguide.tex
+++ b/base/doc/usrguide.tex
@@ -925,8 +925,8 @@ \section{Copying and showing (robust) commands and environments}
 
 \begin{decl}
   |\NewEnvironmentCopy|       \arg{env} \arg{existing-env} \\
-  |\RenewEnvironmentCopy|     \arg{cmd} \arg{existing-env} \\
-  |\DeclareEnvironmentCopy|   \arg{cmd} \arg{existing-env}
+  |\RenewEnvironmentCopy|     \arg{env} \arg{existing-env} \\
+  |\DeclareEnvironmentCopy|   \arg{env} \arg{existing-env}
 \end{decl}
 
 This copies the definition for environment \meta{existing-env} to