diff --git a/app/src/main/java/eu/faircode/email/EntityAttachment.java b/app/src/main/java/eu/faircode/email/EntityAttachment.java
index 69ecfb14ec..87a0522c8d 100644
--- a/app/src/main/java/eu/faircode/email/EntityAttachment.java
+++ b/app/src/main/java/eu/faircode/email/EntityAttachment.java
@@ -160,6 +160,9 @@ public class EntityAttachment {
 
         if ("application/zip".equals(type) ||
                 "application/octet-stream".equals(type)) {
+            if ("log".equalsIgnoreCase(extension))
+                return "text/plain";
+
             String gtype = MimeTypeMap.getSingleton()
                     .getMimeTypeFromExtension(extension.toLowerCase(Locale.ROOT));
             if (gtype == null || gtype.equals(type))