diff --git a/ChangeLog b/ChangeLog
index 320fb722df..6b9b7c21ed 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-05-19  Tim-Philipp Müller  <tim.muller at collabora co uk>
+
+	* configure.ac:
+	  Error out if we don't have the required version of core.
+
 2008-05-19  Tim-Philipp Müller  <tim.muller at collabora co uk>
 
 	* gst/typefind/gsttypefindfunctions.c: (aac_type_find):
diff --git a/configure.ac b/configure.ac
index 59b46345f3..37a139a089 100644
--- a/configure.ac
+++ b/configure.ac
@@ -253,10 +253,10 @@ fi
 
 dnl checks for gstreamer
 dnl uninstalled is selected preferentially -- see pkg-config(1)
-AG_GST_CHECK_GST($GST_MAJORMINOR, [$GST_REQ])
-AG_GST_CHECK_GST_BASE($GST_MAJORMINOR, [$GST_REQ])
-AG_GST_CHECK_GST_GDP($GST_MAJORMINOR, [$GST_REQ])
-AG_GST_CHECK_GST_CONTROLLER($GST_MAJORMINOR, [$GST_REQ])
+AG_GST_CHECK_GST($GST_MAJORMINOR, [$GST_REQ], yes)
+AG_GST_CHECK_GST_BASE($GST_MAJORMINOR, [$GST_REQ], yes)
+AG_GST_CHECK_GST_GDP($GST_MAJORMINOR, [$GST_REQ], yes)
+AG_GST_CHECK_GST_CONTROLLER($GST_MAJORMINOR, [$GST_REQ], yes)
 AG_GST_CHECK_GST_CHECK($GST_MAJORMINOR, [$GST_REQ], no)
 AM_CONDITIONAL(HAVE_GST_CHECK, test "x$HAVE_GST_CHECK" = "xyes")