diff --git a/configure.ac b/configure.ac
index c9f546437..c7579cc79 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1099,6 +1099,11 @@ GTK_DOC_CHECK([gtk_doc_req_version], [--flavour no-tmpl])
 ])
 AM_CONDITIONAL([BUILD_GTK_DOC], [test "x$enable_gtk_doc" = "xyes"])
 
+GLIB_PREFIX="`$PKG_CONFIG --variable=prefix glib-2.0`"
+GDKPIXBUF_PREFIX="`$PKG_CONFIG --variable=prefix gdk-pixbuf-2.0`"
+AC_SUBST(GLIB_PREFIX)
+AC_SUBST(GDKPIXBUF_PREFIX)
+
 dnl ================================================================
 dnl I18n stuff.
 dnl ================================================================
diff --git a/doc/reference/cogl-2.0-experimental/Makefile.am b/doc/reference/cogl-2.0-experimental/Makefile.am
index 0726b082e..ea36eac86 100644
--- a/doc/reference/cogl-2.0-experimental/Makefile.am
+++ b/doc/reference/cogl-2.0-experimental/Makefile.am
@@ -39,7 +39,7 @@ MKTMPL_OPTIONS=
 # e.g. FIXXREF_OPTIONS=--extra-dir=../gdk-pixbuf/html --extra-dir=../gdk/html
 FIXXREF_OPTIONS=\
 	--extra-dir=$(GLIB_PREFIX)/share/gtk-doc/html/glib \
-	--extra-dir=$(GDPIXBUF_PREFIX)/share/gtk-doc/html/gdk-pixbuf
+	--extra-dir=$(GDKPIXBUF_PREFIX)/share/gtk-doc/html/gdk-pixbuf
 
 # Used for dependencies. The docs will be rebuilt if any of these change.
 # e.g. HFILE_GLOB=$(top_srcdir)/gtk/*.h