diff --git a/src/fosslight_binary/_help.py b/src/fosslight_binary/_help.py
index a0f59d8..29a9002 100644
--- a/src/fosslight_binary/_help.py
+++ b/src/fosslight_binary/_help.py
@@ -16,7 +16,6 @@
     Options:
         -h\t\t\t\t    Print help message
         -v\t\t\t\t    Print FOSSLight Binary Scanner version
-        -a <target_architecture>\t    Target Architecture(x86-64, ARM, MIPS, Mach-O, and etc.)
         -o <output_path>\t\t    Output path
         \t\t\t\t    (If you want to generate the specific file name, add the output path with file name.)
         -f <format>\t\t\t    Output file format (excel, csv, opossum)
diff --git a/src/fosslight_binary/binary_analysis.py b/src/fosslight_binary/binary_analysis.py
index ce265c7..0ed031b 100755
--- a/src/fosslight_binary/binary_analysis.py
+++ b/src/fosslight_binary/binary_analysis.py
@@ -247,20 +247,23 @@ def main():
     format = ""
     db_url = ""
 
-    opts, args = getopt.getopt(argv, 'hvp:a:o:f:d:')
-    for opt, arg in opts:
-        if opt == "-h":
-            print_help_msg()
-        elif opt == "-v":
-            print_package_version(_PKG_NAME, "FOSSLight Binary Scanner Version:")
-        elif opt == "-p":
-            path_to_find_bin = arg
-        elif opt == "-o":
-            output_dir = arg
-        elif opt == "-f":
-            format = arg
-        elif opt == "-d":
-            db_url = arg
+    try:
+        opts, args = getopt.getopt(argv, 'hvp:o:f:d:')
+        for opt, arg in opts:
+            if opt == "-h":
+                print_help_msg()
+            elif opt == "-v":
+                print_package_version(_PKG_NAME, "FOSSLight Binary Scanner Version:")
+            elif opt == "-p":
+                path_to_find_bin = arg
+            elif opt == "-o":
+                output_dir = arg
+            elif opt == "-f":
+                format = arg
+            elif opt == "-d":
+                db_url = arg
+    except Exception:
+        print_help_msg()
 
     _windows = platform.system() == "Windows"
     if path_to_find_bin == "":
diff --git a/tox.ini b/tox.ini
index de7dec4..9ef494c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -37,10 +37,10 @@ deps =
 
 commands =
   fosslight_bin -h
-  fosslight_bin -p tests -o test_result/result.csv -f csv -a x86_64
+  fosslight_bin -p tests -o test_result/result.csv -f csv
   ls test_result/
   cat test_result/result.csv
-  fosslight_bin -p tests -o test_result/result.json -f opossum -a x86_64
+  fosslight_bin -p tests -o test_result/result.json -f opossum
   pytest -v --flake8
   pyinstaller --onefile cli.py -n cli --additional-hooks-dir=hooks
   {toxinidir}/dist/cli -p tests -o test_result_cli