diff --git a/manual/stylesheets/style.css b/manual/stylesheets/style.css
index 42982d630..5f2ad7266 100644
--- a/manual/stylesheets/style.css
+++ b/manual/stylesheets/style.css
@@ -16,7 +16,7 @@
  *
  */
 body {
-    font-family: “Palatino Linotype”, Palatino, Georgia, “Century Schoolbook”, serif;
+    font-family: "Palatino Linotype", Palatino, Georgia, "Century Schoolbook", serif;
 }
 
 h2 {
@@ -184,7 +184,7 @@ table.attr td.center, h1.center, p.center {
 }
 
 table.attr td.left {
-    font-family: “Palatino Linotype”, Palatino, Georgia, “Century Schoolbook”, serif;
+    font-family: "Palatino Linotype", Palatino, Georgia, "Century Schoolbook", serif;
     font-size: 1rem;
     font-style: normal;
     text-align: left;