diff --git a/src/misc/satellites/Chandra/aglc.sl b/src/misc/satellites/Chandra/aglc.sl
index 65ca0bd200a55549a734562b837cebea7619b799..776cba7dcd3584c123905f540f2e6161c12194fe 100644
--- a/src/misc/satellites/Chandra/aglc.sl
+++ b/src/misc/satellites/Chandra/aglc.sl
@@ -1,5 +1,8 @@
 % -*- mode: slang; mode: fold -*-
 
+require("pgplot");
+Isis_Verbose = -1;
+
 %; File: aglc.sl                "ACIS Grating Light Curve"
 %; Author: David P. Huenemoerder <dph@space.mit.edu>
 %; Original version: 2003.09.05
@@ -423,22 +426,6 @@ _version[2] ) ;
 %%%  set_slang_load_path(    "blah/slsh/local_packages:" + get_slang_load_path );
 %%% 
 
-%require("histogram");  % 1.3.0 - remove dependency
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%%% CIAO/sherpa wrapper...    Conditionally load the isis and pgplot
-%%% modules, if in a ciao shell.  Don't need if already in isis.
-%
-#ifnexists isis_exit
-%
-require("isis");
-require("pgplot");
-Isis_Verbose = -1;
-%
-#endif
-%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 % global data