diff --git a/src/becca/becca_loader.js b/src/becca/becca_loader.js
index ad4c90a10..f7659e964 100644
--- a/src/becca/becca_loader.js
+++ b/src/becca/becca_loader.js
@@ -70,7 +70,9 @@ function reload() {
 }
 
 function postProcessEntityUpdate(entityName, entity) {
-    if (entityName === 'branches') {
+    if (entityName === 'notes') {
+        noteUpdated(entity);
+    } else if (entityName === 'branches') {
         branchUpdated(entity);
     } else if (entityName === 'attributes') {
         attributeUpdated(entity);
@@ -161,6 +163,15 @@ function branchDeleted(branchId) {
     delete becca.branches[branch.branchId];
 }
 
+function noteUpdated(entity) {
+    const note = becca.notes[entity.noteId];
+
+    if (note) {
+        // type / mime could have been changed, and they are present in flatTextCache
+        note.flatTextCache = null;
+    }
+}
+
 function branchUpdated(branch) {
     const childNote = becca.notes[branch.noteId];