diff --git a/mesonbuild/build.py b/mesonbuild/build.py
index 2fd5626b6..eb18d843e 100644
--- a/mesonbuild/build.py
+++ b/mesonbuild/build.py
@@ -117,15 +117,15 @@ known_shmod_kwargs = known_build_target_kwargs | {'vs_module_defs'}
 known_stlib_kwargs = known_build_target_kwargs | {'pic', 'prelink'}
 known_jar_kwargs = known_exe_kwargs | {'main_class', 'java_resources'}
 
-def _process_install_tag(install_tag: T.Optional[T.Sequence[T.Optional[str]]],
+def _process_install_tag(install_tag: T.Optional[T.List[T.Optional[str]]],
                          num_outputs: int) -> T.List[T.Optional[str]]:
     _install_tag: T.List[T.Optional[str]]
     if not install_tag:
         _install_tag = [None] * num_outputs
     elif len(install_tag) == 1:
-        _install_tag = list(install_tag) * num_outputs
+        _install_tag = install_tag * num_outputs
     else:
-        _install_tag = list(install_tag)
+        _install_tag = install_tag
     return _install_tag
 
 
@@ -2418,7 +2418,7 @@ class CustomTarget(Target, CommandBase):
                  install: bool = False,
                  install_dir: T.Optional[T.Sequence[T.Union[str, Literal[False]]]] = None,
                  install_mode: T.Optional[FileMode] = None,
-                 install_tag: T.Optional[T.Sequence[T.Optional[str]]] = None,
+                 install_tag: T.Optional[T.List[T.Optional[str]]] = None,
                  absolute_paths: bool = False,
                  backend: T.Optional['Backend'] = None,
                  ):
diff --git a/mesonbuild/modules/fs.py b/mesonbuild/modules/fs.py
index 7e3c75a11..eb19ec4ff 100644
--- a/mesonbuild/modules/fs.py
+++ b/mesonbuild/modules/fs.py
@@ -304,7 +304,7 @@ class FSModule(ExtensionModule):
             install=kwargs['install'],
             install_dir=kwargs['install_dir'],
             install_mode=kwargs['install_mode'],
-            install_tag=kwargs['install_tag'],
+            install_tag=[kwargs['install_tag']],
             backend=state.backend,
         )