diff --git a/BUILD.gn b/BUILD.gn
index e3d8ea2766eab4543951acb55bab10f0fbe3cd92..4b44292b1ac5258a2c668f68f9e1bf280980ef04 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -128,6 +128,8 @@ config("ffmpeg_config") {
     "-DCONFIG_OPUS_ENCODER",
     "-DCONFIG_OPUS_PARSER",
     "-DCONFIG_AV3A_PARSER",
+    "-DCONFIG_AMRNB_DECODER",
+    "-DCONFIG_AMRWB_DECODER",
     "-DOHOS_OPT_COMPAT",
     "-Wno-array-parameter",
     "-Wno-deprecated-pragma",