diff --git a/Makefile b/Makefile
index 8aa14073aa..97cfde52e6 100644
--- a/Makefile
+++ b/Makefile
@@ -44,7 +44,7 @@ help:
 	@echo "more than what this wrapper provides, it's a good idea to use waf directly."
 	@echo "The waf executable is at '$(WAF_BINARY)'."
 	@echo ""
-	@echo "For more detailed instructions see http://ardupilot.org/dev/docs/building-the-code.html"
+	@echo "For more detailed instructions see https://ardupilot.org/dev/docs/building-the-code.html"
 	@echo ""
 	@echo "Boards"
 	@echo "------"
diff --git a/mk/check_modules.sh b/mk/check_modules.sh
index cc5d93295f..9c7b003973 100755
--- a/mk/check_modules.sh
+++ b/mk/check_modules.sh
@@ -65,7 +65,7 @@ cat <<EOF
 
 You need to run 'git submodule update'
 
-Please see http://dev.ardupilot.org/wiki/git-submodules/
+Please see https://dev.ardupilot.org/wiki/git-submodules/
 EOF
             exit 1
         }