diff --git a/webrtc/build/common.gypi b/webrtc/build/common.gypi
index e61f3877b1..b420b09f2a 100644
--- a/webrtc/build/common.gypi
+++ b/webrtc/build/common.gypi
@@ -236,6 +236,14 @@
           'WEBRTC_CLOCK_TYPE_REALTIME',
           'WEBRTC_THREAD_RR',
          ],
+         # The Android NDK doesn't provide optimized versions of these
+         # functions. Ensure they are disabled for all compilers.
+         'cflags': [
+           '-fno-builtin-cos',
+           '-fno-builtin-sin',
+           '-fno-builtin-cosf',
+           '-fno-builtin-sinf',
+         ],
          'conditions': [
            ['enable_android_opensl==1', {
              'defines': [