diff --git a/docs/reference/gdk/Makefile.am b/docs/reference/gdk/Makefile.am
index cb10af42af..8c78f1aaa5 100644
--- a/docs/reference/gdk/Makefile.am
+++ b/docs/reference/gdk/Makefile.am
@@ -6,7 +6,7 @@ AUTOMAKE_OPTIONS = 1.6
 DOC_MODULE=gdk4
 
 # The top-level SGML file.
-DOC_MAIN_SGML_FILE=gdk-docs.sgml
+DOC_MAIN_SGML_FILE=gdk4-docs.xml
 
 # Extra options to supply to gtkdoc-scan
 SCAN_OPTIONS=--deprecated-guards=GDK_DISABLE_DEPRECATED \
diff --git a/docs/reference/gdk/gdk-docs.sgml b/docs/reference/gdk/gdk4-docs.xml
similarity index 100%
rename from docs/reference/gdk/gdk-docs.sgml
rename to docs/reference/gdk/gdk4-docs.xml
diff --git a/docs/reference/gdk/gdk3-overrides.txt b/docs/reference/gdk/gdk4-overrides.txt
similarity index 100%
rename from docs/reference/gdk/gdk3-overrides.txt
rename to docs/reference/gdk/gdk4-overrides.txt