diff --git a/aqt/commercial.py b/aqt/commercial.py
index 79e3b3ed..50557d04 100644
--- a/aqt/commercial.py
+++ b/aqt/commercial.py
@@ -118,7 +118,7 @@ def _get_install_command(self, installer_path: Path) -> list[str]:
 
         # When override is specified, only use the installer path and the override parameters
         if self.override:
-            return cmd + self.override.split()
+            return cmd + self.override
 
         # Add authentication if provided
         if self.username and self.password:
diff --git a/aqt/installer.py b/aqt/installer.py
index 0416fad5..3d918f8a 100644
--- a/aqt/installer.py
+++ b/aqt/installer.py
@@ -814,6 +814,7 @@ def _set_install_qt_commercial_parser(self, install_qt_commercial_parser) -> Non
         exclusive_group = install_qt_commercial_parser.add_mutually_exclusive_group()
         exclusive_group.add_argument(
             "--override",
+            nargs=argparse.REMAINDER,
             help="Will ignore all other parameters and use everything after this parameter as "
             "input for the official Qt installer",
         )