diff --git a/doc/Makefile.am b/doc/Makefile.am
index 12dc522dd..44409984b 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,4 +1,4 @@
 SUBDIRS = man reference
 
-EXTRA_DIST=theme-format.txt dialogs.txt code-overview.txt \
+EXTRA_DIST = dialogs.txt code-overview.txt \
 	how-to-get-focus-right.txt rationales.txt