diff --git a/README.md b/README.md
index 8b0c188..5011837 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ pybdy -v
 Resulting in a help usage prompt:
 
 ```
-usage: pybdy -g -s <namelist.bdy>
+usage: pybdy -s <namelist.bdy>
 ```
 
 To use pyBDY, the following command is entered: (the example will run
diff --git a/docs/index.md b/docs/index.md
index 2f185d7..12c8251 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -154,7 +154,7 @@ pybdy -v
 If it has you should see the help usage prompt:
 
 ```
-usage: pybdy -g -s <namelist.bdy>
+usage: pybdy -s <namelist.bdy>
 ```
 
 If not please see the troubleshooting pages for common causes as
diff --git a/src/pybdy/pybdy_exe.py b/src/pybdy/pybdy_exe.py
index 24a205f..cc60a8f 100644
--- a/src/pybdy/pybdy_exe.py
+++ b/src/pybdy/pybdy_exe.py
@@ -43,7 +43,7 @@ def main():
             sys.argv[1:], "hs:g", ["help", "setup=", "mask_gui"]
         )
     except getopt.GetoptError:
-        print("usage: pybdy -g -s <namelist.bdy> ")
+        print("usage: pybdy -s <namelist.bdy> ")
         sys.exit(2)
 
     for opt, arg in opts: