diff --git a/pkgs/by-name/we/webrtc-audio-processing_0_3/package.nix b/pkgs/by-name/we/webrtc-audio-processing_0_3/package.nix
index b64d19521905..8f2d5bcb4c1a 100644
--- a/pkgs/by-name/we/webrtc-audio-processing_0_3/package.nix
+++ b/pkgs/by-name/we/webrtc-audio-processing_0_3/package.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     pkg-config
   ];
 
-  patchPhase = lib.optionalString stdenv.hostPlatform.isMusl ''
+  postPatch = lib.optionalString stdenv.hostPlatform.isMusl ''
     substituteInPlace webrtc/base/checks.cc --replace 'defined(__UCLIBC__)' 1
   '';