diff -ur a/configure.ac b/configure.ac
--- a/configure.ac	2019-05-23 23:37:12.000000000 +0300
+++ b/configure.ac	2020-01-22 12:27:14.190755156 +0300
@@ -638,13 +638,9 @@
 
 AC_ARG_VAR([MOC], [full path to Qt moc program])
 
-AS_IF([test "x$have_x" = "xyes"],
-      [qt_extra="Qt5X11Extras >= 5.0"],
-      [qt_extra=""])
-
 AS_IF([test "x$with_qt" != "xno"],
       [PKG_CHECK_MODULES([QT],
-		         [Qt5Core >= 5 Qt5Gui >= 5 Qt5Widgets >= 5.0 $qt_extra],,
+		         [Qt5Core >= 5 Qt5Gui >= 5 Qt5Widgets >= 5.0 Qt5X11Extras >= 5.0],,
 		         [with_qt5 = "no"
 		          PKG_CHECK_MODULES([QT],
 					    [QtCore >= 4 QtGui >= 4],,