diff --git a/configure.ac b/configure.ac
index c1f86537..f71b175b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -78,11 +78,11 @@ LIBICAL_REQUIRED=0.43
 PKG_CHECK_MODULES(CALENDAR,
                   glib-2.0 >= $GLIB_MIN_VERSION
                   gtk+-3.0 >= $GTK_MIN_VERSION
-                  clutter-1.0 >= CLUTTER_MIN_VERSION
-                  clutter-gtk-1.0 >= CLUTTER_GTK_MIN_VERSION
+                  clutter-1.0 >= $CLUTTER_MIN_VERSION
+                  clutter-gtk-1.0 >= $CLUTTER_GTK_MIN_VERSION
                   libecal-1.2 >= $ECAL_REQUIRED
-                  libedataserver-1.2 >= EDATASERVER_REQUIRED
-                  libedataserverui-3.0 >= EDATASERVERUI_REQUIRED
+                  libedataserver-1.2 >= $EDATASERVER_REQUIRED
+                  libedataserverui-3.0 >= $EDATASERVERUI_REQUIRED
                   libical >= $LIBICAL_REQUIRED)
 
 AC_CONFIG_FILES([