diff --git a/pkgs/applications/networking/pjsip/default.nix b/pkgs/applications/networking/pjsip/default.nix
index 93b8a44836c..8a66c039b5a 100644
--- a/pkgs/applications/networking/pjsip/default.nix
+++ b/pkgs/applications/networking/pjsip/default.nix
@@ -9,6 +9,8 @@ stdenv.mkDerivation rec {
     sha256 = "0dm6l8fypkimmzvld35zyykbg957cm5zb4ny3lchgv68amwfz1fi";
   };
 
+  patches = [ ./fix-aarch64.patch ];
+
   buildInputs = [ openssl libsamplerate alsaLib ];
 
   preConfigure = ''
diff --git a/pkgs/applications/networking/pjsip/fix-aarch64.patch b/pkgs/applications/networking/pjsip/fix-aarch64.patch
new file mode 100644
index 00000000000..f4aabf7a9bb
--- /dev/null
+++ b/pkgs/applications/networking/pjsip/fix-aarch64.patch
@@ -0,0 +1,13 @@
+--- a/aconfigure
++++ b/aconfigure
+@@ -8945,6 +8945,10 @@
+                                  ac_webrtc_instset=neon
+                                  ac_webrtc_cflags="-DWEBRTC_ARCH_ARMV7 -mfloat-abi=hard -mfpu=neon"
+                                  ;;
++                             arm64*|aarch64*)
++                                 ac_webrtc_instset=neon
++                                 ac_webrtc_cflags="-DWEBRTC_ARCH_ARM64"
++                                 ;;
+                              *)
+                                  ac_webrtc_instset=sse2
+                                  ;;