diff --git a/gridded_glm/PACKAGE_README.md b/gridded_glm/PACKAGE_README.md
index 7ce061afd3acec7386e1f7a8cfa4df8ae344ec97..59e09069b539f9af666f98d84c6c55267b96a9d5 100644
--- a/gridded_glm/PACKAGE_README.md
+++ b/gridded_glm/PACKAGE_README.md
@@ -71,7 +71,7 @@ Example Gridded GLM product filename: `CG_GLM-L2-GLMF-M3_G16_s20192991759000_e20
 ​
 A set of tiles can optionally be created for each Gridded GLM file. The tiles are also NetCDF4 files and designed to be compatible with AWIPS. Tiles covering geographic areas without lightning activity are omitted.
 ​
-Example tile filename: `CG_GLM-L2-GLMF-M3_G16_T15_20191026180000.nc`
+Example tile filename: `CSPP_OR_GLM-L2-GLMF-M3_G16_T15_20191026180000.nc`
 ​
 ​
 ## EXAMPLES
diff --git a/gridded_glm/libexec/_minute_gridder.py b/gridded_glm/libexec/_minute_gridder.py
index fd5c872008a50e30804305693f4f9799b2e7ff15..2238633eebe76ed8d09cb93d1243c11a516e9e52 100644
--- a/gridded_glm/libexec/_minute_gridder.py
+++ b/gridded_glm/libexec/_minute_gridder.py
@@ -87,8 +87,8 @@ def create_parser():
                         "of data is available (default: off)")
     parser.add_argument('--system-environment-prefix', default="CG",
                         help="set the system environment prefix for the output grids (default: CG)")
-    parser.add_argument('--system-environment-prefix-tiles', default="CG",
-                        help="set the system environment prefix for the output tiles (default: CG)")
+    parser.add_argument('--system-environment-prefix-tiles', default="CSPP_OR",
+                        help="set the system environment prefix for the output tiles (default: CSPP_OR)")
     # from Requirements: "Input is one or more GLM LCFA (L2+) files in mission standard format (nominally three 20-second input files)"
     parser.add_argument(dest='filenames', metavar='filename', nargs='+')
     return parser