diff --git a/build/win32/vs10/Makefile.am b/build/win32/vs10/Makefile.am
index f67cda71a8..ea8fac12dc 100644
--- a/build/win32/vs10/Makefile.am
+++ b/build/win32/vs10/Makefile.am
@@ -54,7 +54,7 @@ EXTRA_DIST += \
 	gailutil-3.vcxprojin			\
 	gailutil-3.vcxproj.filtersin		\
 	gtk3-install.vcxproj			\
-	gtk3-build-defines.props			\
+	gtk3-build-defines.props		\
 	gtk3-copy-gdk-broadway.props		\
 	gtk3-gen-srcs.props			\
 	gtk3-ignore-broadway.props		\
@@ -62,6 +62,9 @@ EXTRA_DIST += \
 	gtk3-version-paths.props.in		\
 	$(GENERATED_ITEMS)
 
+DISTCLEANFILES = \
+	$(GENERATED_ITEMS)
+
 gtk3-install.props: $(top_srcdir)/build/win32/vs10/gtk3-install.propsin $(MSVC10_HEADERS_LISTS)
 	$(CPP) -P - <$(top_srcdir)/build/win32/vs10/gtk3-install.propsin >$@
 	rm $(MSVC10_HEADERS_LISTS)