diff --git a/pkgs/applications/networking/browsers/falkon/default.nix b/pkgs/applications/networking/browsers/falkon/default.nix
index f9e814a0941b..3c2aace79b26 100644
--- a/pkgs/applications/networking/browsers/falkon/default.nix
+++ b/pkgs/applications/networking/browsers/falkon/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, mkDerivation, lib, fetchFromGitHub
+{ stdenv, mkDerivation, lib, fetchFromGitHub, fetchpatch
 , cmake, extra-cmake-modules, pkgconfig, qmake
 , libpthreadstubs, libxcb, libXdmcp
 , qtsvg, qttools, qtwebengine, qtx11extras
@@ -17,6 +17,14 @@ mkDerivation rec {
     sha256 = "1w64slh9wpcfi4v7ds9wci1zvwh0dh787ndpi6hd4kmdgnswvsw7";
   };
 
+  patches = [
+    # fixes build with qt5 5.14
+    (fetchpatch {
+      url = "https://github.com/KDE/falkon/commit/bbde5c6955c43bc744ed2c4024598495de908f2a.diff";
+      sha256 = "0f7qcddvvdnij3di0acg7jwvwfwyd0xizlav4wccclbj8x7qp5ld";
+    })
+  ];
+
   preConfigure = ''
     export NONBLOCK_JS_DIALOGS=true
     export KDE_INTEGRATION=true