--- a/acinclude.m4
+++ b/acinclude.m4
@@ -2043,21 +2043,23 @@
 	# Try the Qt 5 version first.
 	# (And be prepared to add Qt6 at some point....)
 	#
-	for modprefix in Qt5 Qt
-	do
-		pkg_config_module="${modprefix}$1"
-		AC_MSG_CHECKING(for $pkg_config_module - version >= $min_qt_version)
-		if $PKG_CONFIG --atleast-version $min_qt_version $pkg_config_module; then
-			mod_version=`$PKG_CONFIG --modversion $pkg_config_module`
-			AC_MSG_RESULT(yes (version $mod_version))
-			Qt_CFLAGS="$Qt_CFLAGS `$PKG_CONFIG --cflags $pkg_config_module`"
-			Qt_LIBS="$Qt_LIBS `$PKG_CONFIG --libs $pkg_config_module`"
-			found_$1=yes
-			break
-		else
-			AC_MSG_RESULT(no)
-		fi
-	done
+	if test "$with_qt5" = yes; then
+		modprefix=Qt5
+	else
+		modprefix=Qt
+	fi
+	pkg_config_module="${modprefix}$1"
+	AC_MSG_CHECKING(for $pkg_config_module - version >= $min_qt_version)
+	if $PKG_CONFIG --atleast-version $min_qt_version $pkg_config_module; then
+		mod_version=`$PKG_CONFIG --modversion $pkg_config_module`
+		AC_MSG_RESULT(yes (version $mod_version))
+		Qt_CFLAGS="$Qt_CFLAGS `$PKG_CONFIG --cflags $pkg_config_module`"
+		Qt_LIBS="$Qt_LIBS `$PKG_CONFIG --libs $pkg_config_module`"
+		found_$1=yes
+		break
+	else
+		AC_MSG_RESULT(no)
+	fi
 
 	if test "x$found_$1" = "xyes"; then
 		# Run Action-If-Found
--- a/configure.ac
+++ b/configure.ac
@@ -456,10 +456,15 @@
 #
 # GUI toolkit options
 #
-AC_ARG_WITH([qt],
-  AC_HELP_STRING( [--with-qt=@<:@yes/no@:>@],
+AC_ARG_WITH([qt4],
+  AC_HELP_STRING( [--with-qt4=@<:@yes/no@:>@],
+				  [use Qt @<:@default=yes@:>@]),
+  with_qt4="$withval", with_qt4="unspecified")
+
+AC_ARG_WITH([qt5],
+  AC_HELP_STRING( [--with-qt5=@<:@yes/no@:>@],
                   [use Qt @<:@default=yes@:>@]),
-  with_qt="$withval", with_qt="unspecified")
+  with_qt5="$withval", with_qt5="unspecified")
 
 AC_ARG_WITH([gtk2],
   AC_HELP_STRING( [--with-gtk2=@<:@yes/no@:>@],
@@ -1373,7 +1378,6 @@
 AC_SUBST(GTK2_MIN_VERSION)
 GTK3_MIN_VERSION=3.0.0
 AC_SUBST(GTK3_MIN_VERSION)
-QT_MIN_VERSION=4.6.0
 AC_SUBST(QT_MIN_VERSION)
 # GTK+ and Qt checks; we require GTK+ $GTK2_MIN_VERSION or later or
 # GTK3_MIN_VERSION or later or Qt $QT_MIN_VERSION or later.
@@ -1417,14 +1421,15 @@
 if test "x$enable_wireshark" = "xyes"; then
 	if test "x$with_gtk2" = "xunspecified" -a \
 		"x$with_gtk3" = "xunspecified" -a \
-		"x$with_qt" = "xunspecified"; then
+		"x$with_qt4" = "xunspecified" -a \
+		"x$with_qt5" = "xunspecified"; then
 		#
 		# No GUI toolkit was explicitly specified; pick Qt and GTK+ 3.
 		#
 		with_qt=yes
 		with_gtk3=yes
 	fi
-	if test "x$with_qt" = "xyes"; then
+	if test "x$with_qt" = "xyes" || test "x$with_qt4" = "xyes" || test "x$with_qt5" = "xyes"; then
 		#
 		# Qt was specified; Make sure we have a C++ compiler.
 		#