--- a/configure.ac	2015-04-18 11:04:47.000000000 +0200
+++ b/configure.ac	2017-12-04 20:34:51.804861863 +0100
@@ -854,17 +854,14 @@
 
 if test "$use_qt" = "true";
 then
-  PKG_CHECK_MODULES(QTGUI, [QtGui  >= 4.0.1],,use_qt=false)
-  AC_CHECK_TOOLS(MOC,[moc-qt4 moc],)
-  if test x$MOC = x ; then
-	AC_MSG_WARN(Could not find a moc-qt4 or moc tool in your PATH.)
+  PKG_CHECK_MODULES([QTGUI], [QtCore >= 4.8.0 QtGui], [
+        QT_PATH="$( eval $PKG_CONFIG --variable=libdir QtCore )/bin"
+        AC_PATH_PROGS([MOC], [moc-qt4 moc], [moc], [$QT_PATH])
+        AC_PATH_PROGS([RCC], [rcc-qt4 rcc], [rcc], [$QT_PATH])
+  ], [
+        AC_MSG_ERROR([Qt4 not found])
 	use_qt=false
-  fi 
-  AC_CHECK_TOOLS(RCC,[rcc-qt4 rcc],)
-  if test x$RCC = x ; then
-	AC_MSG_WARN(Could not find a rcc-qt4 or rcc tool in your PATH.)
-	use_qt=false
-  fi 
+  ])
   qphotorec_LDADD="$qphotorec_LDADD $QTGUI_LIBS"
   qphotorec_CXXFLAGS="$qphotorec_CXXFLAGS $QTGUI_CFLAGS"
 fi