diff --git a/configure.ac b/configure.ac
index 59d7c209..3b172260 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,9 +36,9 @@ PKG_CHECK_MODULES([GREETER], [gtk+-3.0 >= 3.20],
 )
 AM_CONDITIONAL([HAVE_GTK320], [test "$HAVE_GTK320" -eq 1])
 
-PKG_CHECK_MODULES([WEB_EXTENSION], [liblightdm-gobject-1 >= 1.19.2],
+PKG_CHECK_MODULES([LIGHTDM_GOBJECT], [liblightdm-gobject-1 >= 1.19.2],
     [AC_DEFINE([HAS_LIGHTDM_1_19_2], [1], [Building with liblightdmgobject 1.19.2])],
-        [PKG_CHECK_MODULES([WEB_EXTENSION], [liblightdm-gobject-1 >= 1.3.5])]
+        [PKG_CHECK_MODULES([LIGHTDM_GOBJECT], [liblightdm-gobject-1 >= 1.3.5])]
 )
 
 AC_SUBST([WEB_EXTENSION_CFLAGS])