diff --git a/build-aux/m4/bitcoin_qt.m4 b/build-aux/m4/bitcoin_qt.m4
index 121e10bd37..4ea2e734e8 100644
--- a/build-aux/m4/bitcoin_qt.m4
+++ b/build-aux/m4/bitcoin_qt.m4
@@ -50,7 +50,7 @@ AC_DEFUN([BITCOIN_QT_INIT],[
   dnl enable qt support
   AC_ARG_WITH([gui],
     [AS_HELP_STRING([--with-gui@<:@=no|qt4|qt5|auto@:>@],
-    [build bitcoin-qt GUI (default=auto, qt4 tried first)])],
+    [build bitcoin-qt GUI (default=auto, qt5 tried first)])],
     [
      bitcoin_qt_want_version=$withval
      if test x$bitcoin_qt_want_version = xyes; then
diff --git a/configure.ac b/configure.ac
index 1669ec03ce..d94dd0c3dc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -538,7 +538,7 @@ fi
 BITCOIN_QT_INIT
 
 dnl sets $bitcoin_enable_qt, $bitcoin_enable_qt_test, $bitcoin_enable_qt_dbus
-BITCOIN_QT_CONFIGURE([$use_pkgconfig], [qt4])
+BITCOIN_QT_CONFIGURE([$use_pkgconfig], [qt5])
 
 if test x$build_bitcoin_utils$build_bitcoind$bitcoin_enable_qt$use_tests = xnononono; then
     use_boost=no
diff --git a/doc/build-unix.md b/doc/build-unix.md
index 25867e2993..2102bbc830 100644
--- a/doc/build-unix.md
+++ b/doc/build-unix.md
@@ -100,7 +100,7 @@ Dependencies for the GUI: Ubuntu & Debian
 
 If you want to build Bitcoin-Qt, make sure that the required packages for Qt development
 are installed. Either Qt 5 or Qt 4 are necessary to build the GUI.
-If both Qt 4 and Qt 5 are installed, Qt 4 will be used. Pass `--with-gui=qt5` to configure to choose Qt5.
+If both Qt 4 and Qt 5 are installed, Qt 5 will be used. Pass `--with-gui=qt4` to configure to choose Qt4.
 To build without GUI pass `--without-gui`.
 
 To build with Qt 5 (recommended) you need the following: