diff --git a/samples/rest-notes-slate/slate/source/fonts/slate.svg b/samples/rest-notes-slate/slate/source/fonts/slate.svg
index 5f349823..82e48fb5 100755
--- a/samples/rest-notes-slate/slate/source/fonts/slate.svg
+++ b/samples/rest-notes-slate/slate/source/fonts/slate.svg
@@ -1,5 +1,5 @@
 <?xml version="1.0" standalone="no"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd" >
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "https://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd" >
 <svg xmlns="http://www.w3.org/2000/svg">
 <metadata>Generated by IcoMoon</metadata>
 <defs>