diff --git a/src/article/main.md b/src/article/main.md
index 9adba72..334785e 100644
--- a/src/article/main.md
+++ b/src/article/main.md
@@ -1,7 +1,7 @@
 %English
 # The schrodinger equation
 %German
-# Die Schrödinger Gleichung
+# Die Schr"odinger Gleichung
 
 %English
 ## Preface

diff --git a/src/article/main.md b/src/article/main.md
index 9adba72..334785e 100644
--- a/src/article/main.md
+++ b/src/article/main.md
@@ -1,7 +1,7 @@
 %English
 # The schrodinger equation
 %German
-# Die Schrödinger Gleichung
+# Die Schr"odinger Gleichung
 
 %English
 ## Preface
diff --git a/src/build.js b/src/build.js
index e1bf5da..e35187e 100644
--- a/src/build.js
+++ b/src/build.js
@@ -65,6 +65,19 @@
   }), {})
 }), {})
 
+const validUmlaute = "aeouAEOU"
+
+function processUmlaute(line) {
+  const matches = line.match(/(?!\\)\"[aeouAEOU]/)
+  if (!matches) {
+    return line
+  }
+  matches.forEach(umlaut => {
+    line = line.replace(umlaut, `&${umlaut.substring(1)}uml;`)
+  })
+  return line
+}
+
 for (const [name, data] of Object.entries(articleEntries)) {
   var mathMode = false
   var bigMathMode = false
@@ -84,8 +97,9 @@
         line = `<h${i}>${line.substring(i+1)}</h${i}>`
       }
     }
-    line = processLinks(line);
-    line = processMathModes(line);
+    line = processUmlaute(line)
+    line = processLinks(line)
+    line = processMathModes(line)
     if (language == "common") {
       languages.forEach(language => {
         result[name][language] += `${line} `