diff --git a/gramps/doc/extending-gramps/C/Makefile.in b/gramps/doc/extending-gramps/C/Makefile.in
index daeae1d2c..c8900851f 100644
--- a/gramps/doc/extending-gramps/C/Makefile.in
+++ b/gramps/doc/extending-gramps/C/Makefile.in
@@ -10,7 +10,7 @@ ${MANDIR}/index.html: ${MANSRC}
 	
 install:
 	-${INSTALL} -d ${GNOMEHELP}/${EG}/C
-	-${INSTALL} ${EG}/*.html ${GNOMEHELP}/${EG}/C
+	-${INSTALL} -m 644 ${EG}/*.html ${GNOMEHELP}/${EG}/C
 
 uninstall:
 	-rm -f ${GNOMEHELP}/${EG}/C/*.html
diff --git a/gramps/doc/gramps-manual/C/Makefile.in b/gramps/doc/gramps-manual/C/Makefile.in
index 08bc88823..ad92d28a2 100644
--- a/gramps/doc/gramps-manual/C/Makefile.in
+++ b/gramps/doc/gramps-manual/C/Makefile.in
@@ -15,8 +15,8 @@ ${MANDIR}/index.html: ${MANSRC}
 	
 install:
 	-${INSTALL} -d ${GNOMEHELP}/${GM}/C
-	-${INSTALL} ${GM}/*.html ${GNOMEHELP}/${GM}/C
-	-${INSTALL} ${GM}/*.png ${GNOMEHELP}/${GM}/C
+	-${INSTALL} -m 644 ${GM}/*.html ${GNOMEHELP}/${GM}/C
+	-${INSTALL} -m 644 ${GM}/*.png ${GNOMEHELP}/${GM}/C
 
 uninstall:
 	-rm -f ${GNOMEHELP}/${GM}/C/*.html