diff --git a/app/build.gradle b/app/build.gradle
index 8d15cee808..431ad5f73f 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -4,7 +4,7 @@ apply plugin: 'kotlin-android'
 apply plugin: 'de.undercouch.download'
 
 def getVersionCode = { -> return 1973 }
-def getRevision = { -> return "a" }
+def getRevision = { -> return "b" }
 def getReleaseName = { -> return "Mei long" }
 // https://en.wikipedia.org/wiki/List_of_dinosaur_genera
 
diff --git a/app/src/main/java/eu/faircode/email/LanguageTool.java b/app/src/main/java/eu/faircode/email/LanguageTool.java
index a8fdfa240c..9977a8e552 100644
--- a/app/src/main/java/eu/faircode/email/LanguageTool.java
+++ b/app/src/main/java/eu/faircode/email/LanguageTool.java
@@ -24,6 +24,7 @@ import android.content.SharedPreferences;
 import android.text.Editable;
 import android.text.Spanned;
 import android.text.TextPaint;
+import android.text.TextUtils;
 import android.text.style.SuggestionSpan;
 import android.widget.EditText;
 
@@ -62,6 +63,9 @@ public class LanguageTool {
     }
 
     static List<Suggestion> getSuggestions(Context context, CharSequence text) throws IOException, JSONException {
+        if (TextUtils.isEmpty(text))
+            return new ArrayList<>();
+
         // https://languagetool.org/http-api/swagger-ui/#!/default/post_check
         String request =
                 "text=" + URLEncoder.encode(text.toString(), StandardCharsets.UTF_8.name()) +