diff --git a/pkgs/applications/misc/opencpn/default.nix b/pkgs/applications/misc/opencpn/default.nix
index 590ca3304516..357f4fcd87e5 100644
--- a/pkgs/applications/misc/opencpn/default.nix
+++ b/pkgs/applications/misc/opencpn/default.nix
@@ -1,5 +1,7 @@
 { stdenv
 , lib
+, AppKit
+, DarwinTools
 , alsa-utils
 , at-spi2-core
 , cmake
@@ -59,12 +61,7 @@ stdenv.mkDerivation rec {
   ];
 
   postPatch = lib.optionalString stdenv.isDarwin ''
-    substituteInPlace cmake/TargetSetup.cmake \
-      --replace '"sw_vers" "-productVersion"' '"echo" "1"'
     sed -i '/fixup_bundle/d' CMakeLists.txt
-  '' + lib.optionalString (stdenv.isDarwin && stdenv.isx86_64) ''
-    substituteInPlace CMakeLists.txt \
-      --replace 'DARWIN_VERSION LESS 16' 'TRUE'
   '';
 
   nativeBuildInputs = [
@@ -73,6 +70,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optionals stdenv.isLinux [
     lsb-release
   ] ++ lib.optionals stdenv.isDarwin [
+    DarwinTools
     makeWrapper
   ];
 
@@ -81,6 +79,10 @@ stdenv.mkDerivation rec {
     curl
     dbus
     flac
+  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    # gtk3 propagates AppKit from the 10.12 SDK
+    AppKit
+  ] ++ [
     gtk3
     jasper
     libGLU
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index aed4f4b75471..82ef85ed3935 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -31301,7 +31301,10 @@ with pkgs;
 
   openbrf = libsForQt5.callPackage ../applications/misc/openbrf { };
 
-  opencpn = callPackage ../applications/misc/opencpn { };
+  opencpn = darwin.apple_sdk_11_0.callPackage ../applications/misc/opencpn {
+    inherit (darwin) DarwinTools;
+    inherit (darwin.apple_sdk_11_0.frameworks) AppKit;
+  };
 
   openfx = callPackage ../development/libraries/openfx {};