diff --git a/lib/python/qmk/cli/compile.py b/lib/python/qmk/cli/compile.py
index 9e7629906f..f43e5f32de 100755
--- a/lib/python/qmk/cli/compile.py
+++ b/lib/python/qmk/cli/compile.py
@@ -10,7 +10,17 @@ import qmk.path
 from qmk.decorators import automagic_keyboard, automagic_keymap
 from qmk.commands import compile_configurator_json, create_make_command, parse_configurator_json, build_environment
 from qmk.keyboard import keyboard_completer, keyboard_folder
-from qmk.keymap import keymap_completer
+from qmk.keymap import keymap_completer, locate_keymap
+
+
+def _is_keymap_target(keyboard, keymap):
+    if keymap == 'all':
+        return True
+
+    if locate_keymap(keyboard, keymap):
+        return True
+
+    return False
 
 
 @cli.argument('filename', nargs='?', arg_only=True, type=qmk.path.FileType('r'), completer=FilesCompleter('.json'), help='The configurator export to compile')
@@ -43,6 +53,11 @@ def compile(cli):
 
     elif cli.config.compile.keyboard and cli.config.compile.keymap:
         # Generate the make command for a specific keyboard/keymap.
+        if not _is_keymap_target(cli.config.compile.keyboard, cli.config.compile.keymap):
+            cli.log.error('Invalid keymap argument.')
+            cli.print_help()
+            return False
+
         if cli.args.clean:
             commands.append(create_make_command(cli.config.compile.keyboard, cli.config.compile.keymap, 'clean', **envs))
         commands.append(create_make_command(cli.config.compile.keyboard, cli.config.compile.keymap, parallel=cli.config.compile.parallel, **envs))
diff --git a/lib/python/qmk/cli/flash.py b/lib/python/qmk/cli/flash.py
index 52defb5f0d..8724f26889 100644
--- a/lib/python/qmk/cli/flash.py
+++ b/lib/python/qmk/cli/flash.py
@@ -11,10 +11,20 @@ import qmk.path
 from qmk.decorators import automagic_keyboard, automagic_keymap
 from qmk.commands import compile_configurator_json, create_make_command, parse_configurator_json, build_environment
 from qmk.keyboard import keyboard_completer, keyboard_folder
-from qmk.keymap import keymap_completer
+from qmk.keymap import keymap_completer, locate_keymap
 from qmk.flashers import flasher
 
 
+def _is_keymap_target(keyboard, keymap):
+    if keymap == 'all':
+        return True
+
+    if locate_keymap(keyboard, keymap):
+        return True
+
+    return False
+
+
 def _list_bootloaders():
     """Prints the available bootloaders listed in docs.qmk.fm.
     """
@@ -98,6 +108,11 @@ def flash(cli):
 
     elif cli.config.flash.keyboard and cli.config.flash.keymap:
         # Generate the make command for a specific keyboard/keymap.
+        if not _is_keymap_target(cli.config.flash.keyboard, cli.config.flash.keymap):
+            cli.log.error('Invalid keymap argument.')
+            cli.print_help()
+            return False
+
         if cli.args.clean:
             commands.append(create_make_command(cli.config.flash.keyboard, cli.config.flash.keymap, 'clean', **envs))
         commands.append(create_make_command(cli.config.flash.keyboard, cli.config.flash.keymap, cli.args.bootloader, parallel=cli.config.flash.parallel, **envs))