4 files changed, 4 insertions, 0 deletions
diff --git a/docs/Makefile.am b/docs/Makefile.am
index b2c5627c..53abc74c 100644
--- a/docs/Makefile.am
+++ b/docs/Makefile.am
@@ -1,3 +1,4 @@
+MAINTAINERCLEANFILES = Makefile.in
 if GTK_DOC_ENABLED
     GTK_DOC_SD = reference
 endif
diff --git a/docs/lasso-book/Makefile.am b/docs/lasso-book/Makefile.am
index 33421f94..a4aebf38 100644
--- a/docs/lasso-book/Makefile.am
+++ b/docs/lasso-book/Makefile.am
@@ -1,3 +1,4 @@
+MAINTAINERCLEANFILES = Makefile.in
 if HAVE_INKSCAPE
 if HAVE_XSLTPROC
 SUBDIRS = figures
diff --git a/docs/lasso-book/figures/Makefile.am b/docs/lasso-book/figures/Makefile.am
index fa788652..aeb1616f 100644
--- a/docs/lasso-book/figures/Makefile.am
+++ b/docs/lasso-book/figures/Makefile.am
@@ -1,3 +1,4 @@
+MAINTAINERCLEANFILES = Makefile.in
 figuresdir = $(datadir)/doc/lasso/figures
 
 FIGURES_PNG_FILES = \
diff --git a/docs/reference/Makefile.am b/docs/reference/Makefile.am
index 643e47c6..410ce922 100644
--- a/docs/reference/Makefile.am
+++ b/docs/reference/Makefile.am
@@ -1,3 +1,4 @@
+MAINTAINERCLEANFILES = Makefile.in
 EXTRA_DIST = \
 	lasso-sections.txt \
 	lasso.sgml \