diff --git a/korektury/templates/korektury/korekturovatko/__edit_komentar.html b/korektury/templates/korektury/korekturovatko/__edit_komentar.html
index 312d5402..4c07c3aa 100644
--- a/korektury/templates/korektury/korekturovatko/__edit_komentar.html
+++ b/korektury/templates/korektury/korekturovatko/__edit_komentar.html
@@ -12,7 +12,7 @@
     constructor() {
       this.div = document.getElementById('commform-div');
       this.text = document.getElementById('commform-text');
-      const submit_button = document.getElementById('commform-submit');
+      this.submit_button = document.getElementById('commform-submit');
       const close_button = document.getElementById('commform-close');
 
 
@@ -22,7 +22,7 @@
       });
 
       close_button.addEventListener("click", _ => { this.close(); });
-      submit_button.addEventListener("click", _ => { this.submit(); });
+      this.submit_button.addEventListener("click", _ => { this.submit(); });
     }
 
 
@@ -58,6 +58,7 @@
     }
 
     submit() {
+      this.submit_button.disabled = true;
       const data = new FormData(CSRF_FORM);
       data.append('x', this.x);
       data.append('y', this.y);
@@ -67,7 +68,7 @@
 
       data.append('text', this.text.value);
 
-      update_all({method: 'POST', body: data}, true, () => {this.close()});
+      update_all({method: 'POST', body: data}, true, () => {this.close(); this.submit_button.disabled = false;});
     }
   }