diff --git a/doc/emacs/building.texi b/doc/emacs/building.texi
index de3ffd571bc..4c716154e64 100644
--- a/doc/emacs/building.texi
+++ b/doc/emacs/building.texi
@@ -534,6 +534,10 @@ Run the Java debugger.
 @findex pdb
 Run the Python debugger.
 
+@item M-x guiler
+@findex guiler
+Run Guile REPL for debugging Guile Scheme programs.
+
 @item M-x dbx
 @findex dbx
 Run the DBX debugger.