diff --git a/configure.in b/configure.in
index 16ecb41..335c90c 100644
--- a/configure.in
+++ b/configure.in
@@ -95,18 +95,20 @@ PKG_PROG_PKG_CONFIG
 
 # libraries
 PKG_CHECK_MODULES([QT_GUI], [QtCore QtGui],
-   [have_qtgui=1],
+   [AC_DEFINE([HAVE_QTGUI])
+    have_qtgui=1],
    [PKG_CHECK_MODULES([QT_GUI], [Qt5Core Qt5Gui Qt5Widgets])],
-   [have_qtgui=1],
+   [AC_DEFINE([HAVE_QTGUI])
+    have_qtgui=1],
    [have_qtgui=0])
-AC_DEFINE([HAVE_QTGUI], "$have_qtgui")
 AM_CONDITIONAL(HAVE_QTGUI, test "$have_qtgui" = "1")
 PKG_CHECK_MODULES([QT_NETWORK], [QtNetwork],
-   [have_qtnetwork=1],
+   [AC_DEFINE([HAVE_QTNETWORK], $have_qtnetwork)
+    have_qtnetwork=1],
    [PKG_CHECK_MODULES([QT_NETWORK], [Qt5Network])],
-   [have_qtnetwork=1],
+   [AC_DEFINE([HAVE_QTNETWORK], $have_qtnetwork)
+    have_qtnetwork=1],
    [have_qtnetwork=0])
-AC_DEFINE([HAVE_QTNETWORK], "$have_qtnetwork")
 AM_CONDITIONAL(HAVE_QTNETWORK, test "$have_qtnetwork" = "1")
 
 AC_ARG_ENABLE(pedantic,