diff --git a/pkgs/applications/radio/direwolf/default.nix b/pkgs/applications/radio/direwolf/default.nix
index 7b8f60819c4..ffd608edf7f 100644
--- a/pkgs/applications/radio/direwolf/default.nix
+++ b/pkgs/applications/radio/direwolf/default.nix
@@ -22,22 +22,23 @@ stdenv.mkDerivation rec {
     espeak gpsd hamlib perl python3
   ] ++ (optionals stdenv.isLinux [alsa-lib udev]);
 
-  patches = [
-    ./udev-fix.patch
-  ];
-
   postPatch = ''
+    substituteInPlace conf/CMakeLists.txt \
+      --replace /etc/udev/rules.d/ $out/lib/udev/rules.d/
     substituteInPlace src/symbols.c \
       --replace /usr/share/direwolf/symbols-new.txt $out/share/direwolf/symbols-new.txt \
       --replace /opt/local/share/direwolf/symbols-new.txt $out/share/direwolf/symbols-new.txt
     substituteInPlace src/decode_aprs.c \
       --replace /usr/share/direwolf/tocalls.txt $out/share/direwolf/tocalls.txt \
       --replace /opt/local/share/direwolf/tocalls.txt $out/share/direwolf/tocalls.txt
+    patchShebangs scripts/dwespeak.sh
     substituteInPlace scripts/dwespeak.sh \
       --replace espeak ${espeak}/bin/espeak
     substituteInPlace cmake/cpack/direwolf.desktop.in \
       --replace 'Terminal=false' 'Terminal=true' \
-      --replace 'Exec=@APPLICATION_DESKTOP_EXEC@' 'Exec=direwolf' \
+      --replace 'Exec=@APPLICATION_DESKTOP_EXEC@' 'Exec=direwolf'
+    substituteInPlace src/dwgpsd.c \
+      --replace 'GPSD_API_MAJOR_VERSION > 11' 'GPSD_API_MAJOR_VERSION > 12'
   '';
 
   meta = {
diff --git a/pkgs/applications/radio/direwolf/udev-fix.patch b/pkgs/applications/radio/direwolf/udev-fix.patch
deleted file mode 100644
index cff17fb8862..00000000000
--- a/pkgs/applications/radio/direwolf/udev-fix.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- direwolf/conf/CMakeLists.txt.orig	2020-12-04 11:12:59.739390894 -0600
-+++ direwolf/conf/CMakeLists.txt	2020-12-04 11:23:09.146594795 -0600
-@@ -26,7 +26,7 @@
- 
- # install udev rules for CM108
- if(LINUX)
--  install(FILES "${CUSTOM_CONF_DIR}/99-direwolf-cmedia.rules" DESTINATION /etc/udev/rules.d/)
-+  install(FILES "${CUSTOM_CONF_DIR}/99-direwolf-cmedia.rules" DESTINATION "${CMAKE_INSTALL_PREFIX}/lib/udev/rules.d/")
- endif()
- 
- install(FILES "${CMAKE_BINARY_DIR}/direwolf.conf" DESTINATION ${INSTALL_CONF_DIR})