diff --git a/INSTALL b/INSTALL
index 8f3685d085..587b0446f8 100644
--- a/INSTALL
+++ b/INSTALL
@@ -91,8 +91,7 @@ these steps:
  7. install the binaries and man pages.  You may need to be superuser to
     do this (depending on where you are installing things):
 
-	% su
-	# make install
+	% su -c make install
 
     That's it!