diff --git a/src/routes/api/clipper.js b/src/routes/api/clipper.js
index a58d03ce9..b7d5663de 100644
--- a/src/routes/api/clipper.js
+++ b/src/routes/api/clipper.js
@@ -53,7 +53,7 @@ function addClipping(req) {
         clippingNote.setLabel('pageUrl', pageUrl);
     }
 
-    const rewrittenContent = addImagesToNote(images, clippingNote, content);
+    const rewrittenContent = processContent(images, clippingNote, content);
 
     const existingContent = clippingNote.getContent();
 
@@ -85,7 +85,7 @@ function createNote(req) {
         note.setLabel('pageUrl', pageUrl);
     }
 
-    const rewrittenContent = addImagesToNote(images, note, content);
+    const rewrittenContent = processContent(images, note, content);
 
     note.setContent(rewrittenContent);
 
@@ -94,8 +94,11 @@ function createNote(req) {
     };
 }
 
-function addImagesToNote(images, note, content) {
-    let rewrittenContent = content;
+function processContent(images, note, content) {
+    // H1 is not supported so convert it to H2
+    let rewrittenContent = content
+        .replace(/<h1/ig, "<h2")
+        .replace(/<\/h1/ig, "</h2");
 
     if (images) {
         for (const {src, dataUrl, imageId} of images) {
diff --git a/src/services/import/enex.js b/src/services/import/enex.js
index 47dcbfb2e..f78994934 100644
--- a/src/services/import/enex.js
+++ b/src/services/import/enex.js
@@ -250,14 +250,14 @@ function importEnex(taskContext, file, parentNote) {
             }
 
             const createFileNote = () => {
-                const resourceNote = (noteService.createNewNote({
+                const resourceNote = noteService.createNewNote({
                     parentNoteId: noteEntity.noteId,
                     title: resource.title,
                     content: resource.content,
                     type: 'file',
                     mime: resource.mime,
                     isProtected: parentNote.isProtected && protectedSessionService.isProtectedSessionAvailable(),
-                })).note;
+                }).note;
 
                 for (const attr of resource.attributes) {
                     noteEntity.addAttribute(attr.type, attr.name, attr.value);
diff --git a/src/services/note_cache/similarity.js b/src/services/note_cache/similarity.js
index 3bc47890d..8be5f9dda 100644
--- a/src/services/note_cache/similarity.js
+++ b/src/services/note_cache/similarity.js
@@ -11,9 +11,9 @@ const IGNORED_ATTR_NAMES = [
 
 function filterLabelValue(value) {
     return value
-        .replace(/https?:\/\//i, "")
-        .replace(/www\./i, "")
-        .replace(/(\.net|\.com|\.org|\.info|\.edu)/i, "");
+        .replace(/https?:\/\//ig, "")
+        .replace(/www\./ig, "")
+        .replace(/(\.net|\.com|\.org|\.info|\.edu)/ig, "");
 }
 
 /**
diff --git a/src/services/notes.js b/src/services/notes.js
index 745a87542..14f0eefef 100644
--- a/src/services/notes.js
+++ b/src/services/notes.js
@@ -55,6 +55,8 @@ function deriveMime(type, mime) {
         mime = 'application/json';
     } else if (['render', 'book'].includes(type)) {
         mime = '';
+    } else {
+        mime = 'application/octet-stream';
     }
 
     return mime;