diff --git a/pkgs/development/libraries/qscintilla/default.nix b/pkgs/development/libraries/qscintilla/default.nix
index 43f0e431bb15b..9892d0a96b169 100644
--- a/pkgs/development/libraries/qscintilla/default.nix
+++ b/pkgs/development/libraries/qscintilla/default.nix
@@ -29,7 +29,8 @@ stdenv.mkDerivation rec {
     ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
 
 
-  patches = lib.optional (stdenv.isDarwin && withQt5) [ xcodePatch ];
+  patches = (lib.optional (stdenv.isDarwin && withQt5) xcodePatch) ++
+            (lib.optional (!withQt5) ./fix-qt4-build.patch );
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/qscintilla/fix-qt4-build.patch b/pkgs/development/libraries/qscintilla/fix-qt4-build.patch
new file mode 100644
index 0000000000000..2d4339f35f430
--- /dev/null
+++ b/pkgs/development/libraries/qscintilla/fix-qt4-build.patch
@@ -0,0 +1,11 @@
+diff -ur QScintilla_gpl-2.9.4/Qt4Qt5/Qsci/qsciscintillabase.h QScintilla_gpl-2.9.4-fix/Qt4Qt5/Qsci/qsciscintillabase.h
+--- QScintilla_gpl-2.9.4/Qt4Qt5/Qsci/qsciscintillabase.h	2016-12-25 23:01:54.000000000 +0100
++++ QScintilla_gpl-2.9.4-fix/Qt4Qt5/Qsci/qsciscintillabase.h	2019-10-22 09:07:55.429260135 +0200
+@@ -31,6 +31,7 @@
+ #include <QByteArray>
+ #include <QPoint>
+ #include <QTimer>
++#include <QUrl>
+ 
+ #include <Qsci/qsciglobal.h>
+