diff --git a/third-party/webrtc/BUILD b/third-party/webrtc/BUILD
index e74c7ba0ff..9e7dfe1dbe 100644
--- a/third-party/webrtc/BUILD
+++ b/third-party/webrtc/BUILD
@@ -3068,7 +3068,6 @@ objc_library(
         "-Ithird-party/libyuv",
         "-Ithird-party/webrtc/absl",
         "-DBSD=1",
-        "-DUSE_KISS_FFT",
         "-DHAVE_PTHREAD",
         "-DWEBRTC_APM_DEBUG_DUMP=0",
         "-DWEBRTC_USE_BUILTIN_ISAC_FLOAT",
@@ -3132,7 +3131,6 @@ objc_library(
         "-Ithird-party/libyuv",
         "-Ithird-party/webrtc/absl",
         "-DBSD=1",
-        "-DUSE_KISS_FFT",
         "-DHAVE_PTHREAD",
         "-DWEBRTC_APM_DEBUG_DUMP=0",
         "-DWEBRTC_USE_BUILTIN_ISAC_FLOAT",