diff --git a/Android.bp b/Android.bp
index d953669..3dc951a 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,3 +1,37 @@
+package {
+    default_applicable_licenses: ["external_pffft_license"],
+}
+
+// Added automatically by a large-scale-change that took the approach of
+// 'apply every license found to every target'. While this makes sure we respect
+// every license restriction, it may not be entirely correct.
+//
+// e.g. GPL in an MIT project might only apply to the contrib/ directory.
+//
+// Please consider splitting the single license below into multiple licenses,
+// taking care not to lose any license_kind information, and overriding the
+// default license using the 'licenses: [...]' property on targets as needed.
+//
+// For unused files, consider creating a 'fileGroup' with "//visibility:private"
+// to attach the license to, and including a comment whether the files may be
+// used in the current project.
+//
+// large-scale-change filtered out the below license kinds as false-positives:
+//   SPDX-license-identifier-GPL
+// See: http://go/android-license-faq
+license {
+    name: "external_pffft_license",
+    visibility: [":__subpackages__"],
+    license_kinds: [
+        "SPDX-license-identifier-Apache-2.0",
+        "SPDX-license-identifier-BSD",
+        "SPDX-license-identifier-MIT",
+    ],
+    license_text: [
+        "LICENSE.txt",
+    ],
+}
+
 cc_library_static {
     name: "libpffft",
     // vendor needed for libpreprocessing effects.