diff --git a/src/west/app/main.py b/src/west/app/main.py
index adfa3f99..5c4cda84 100755
--- a/src/west/app/main.py
+++ b/src/west/app/main.py
@@ -982,7 +982,7 @@ def append(*strings):
                     # warn them again.
                     append('Cannot load extension commands; '
                            'help for them is not available.')
-                    append('(To debug, try: "west manifest --validate".)')
+                    append('(To debug, try: "west -vv manifest --validate".)')
                     append('')
             else:
                 # TODO we may want to be more aggressive about loading
diff --git a/src/west/commands.py b/src/west/commands.py
index 2e5a4b89..1abb0fcd 100644
--- a/src/west/commands.py
+++ b/src/west/commands.py
@@ -260,7 +260,7 @@ def _get_manifest(self) -> Manifest:
         if self._manifest is None:
             self.die(f"can't run west {self.name};",
                      "it requires the manifest, which was not available.",
-                     'Try "west manifest --validate" to debug.')
+                     'Try "west -vv manifest --validate" to debug.')
         return self._manifest
 
     def _set_manifest(self, manifest: Optional[Manifest]):