diff --git a/Lib/distutils/command/install_data.py b/Lib/distutils/command/install_data.py
index 95ef423127e..448614b050f 100644
--- a/Lib/distutils/command/install_data.py
+++ b/Lib/distutils/command/install_data.py
@@ -18,3 +18,6 @@ class install_data (install_misc):
 
     def run (self):
         self._copy_files(self.distribution.data)
+
+    def get_inputs (self):
+        return self.distribution.data or []
diff --git a/Lib/distutils/command/install_scripts.py b/Lib/distutils/command/install_scripts.py
index 4e23efc8b63..43e5fc18bca 100644
--- a/Lib/distutils/command/install_scripts.py
+++ b/Lib/distutils/command/install_scripts.py
@@ -32,4 +32,7 @@ class install_scripts(install_misc):
                     self.announce("changing mode of %s to %o" % (file, mode))
                     os.chmod(file, mode)
 
+    def get_inputs (self):
+        return self.distribution.scripts or []
+
 # class install_scripts