diff --git a/pkgs/development/libraries/webrtc-audio-processing/default.nix b/pkgs/development/libraries/webrtc-audio-processing/default.nix
index efd2ce3b1fcc..d757789fc268 100644
--- a/pkgs/development/libraries/webrtc-audio-processing/default.nix
+++ b/pkgs/development/libraries/webrtc-audio-processing/default.nix
@@ -8,6 +8,8 @@ stdenv.mkDerivation rec {
     sha256 = "1gsx7k77blfy171b6g3m0k0s0072v6jcawhmx1kjs9w5zlwdkzd0";
   };
 
+  patches = [ ./enable-riscv.patch ];
+
   buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ ApplicationServices ]);
 
   patchPhase = lib.optionalString stdenv.hostPlatform.isMusl ''
diff --git a/pkgs/development/libraries/webrtc-audio-processing/enable-riscv.patch b/pkgs/development/libraries/webrtc-audio-processing/enable-riscv.patch
new file mode 100644
index 000000000000..d61c33548a73
--- /dev/null
+++ b/pkgs/development/libraries/webrtc-audio-processing/enable-riscv.patch
@@ -0,0 +1,18 @@
+diff --git a/webrtc/typedefs.h b/webrtc/typedefs.h
+index d875490..ce1f3e8 100644
+--- a/webrtc/typedefs.h
++++ b/webrtc/typedefs.h
+@@ -26,6 +26,13 @@
+ #elif defined(__aarch64__)
+ #define WEBRTC_ARCH_64_BITS
+ #define WEBRTC_ARCH_LITTLE_ENDIAN
++#elif defined(__riscv) || defined(__riscv__)
++#define WEBRTC_ARCH_LITTLE_ENDIAN
++#if __riscv_xlen == 64
++#define WEBRTC_ARCH_64_BITS
++#else
++#define WEBRTC_ARCH_32_BITS
++#endif
+ #elif defined(_M_IX86) || defined(__i386__)
+ #define WEBRTC_ARCH_X86_FAMILY
+ #define WEBRTC_ARCH_X86