diff --git a/templates/modals/objects/add_pathway_edge_modal.html b/templates/modals/objects/add_pathway_edge_modal.html
index 6a7d8cd6..02c3f86a 100644
--- a/templates/modals/objects/add_pathway_edge_modal.html
+++ b/templates/modals/objects/add_pathway_edge_modal.html
@@ -5,6 +5,7 @@
   x-data="{
     isSubmitting: false,
     reactionImageUrl: '',
+    pes: false,
 
     reset() {
       this.isSubmitting = false;
@@ -15,20 +16,30 @@
       const substratesSelect = document.getElementById('add_pathway_edge_substrates');
       const productsSelect = document.getElementById('add_pathway_edge_products');
 
+      const pesLinks = [];
+
       const substrates = [];
       for (const option of substratesSelect.selectedOptions) {
         substrates.push(option.dataset.smiles);
+        if (option.dataset.pes === 'true') {
+          pesLinks.push(option.dataset.pes);
+        }
       }
 
       const products = [];
       for (const option of productsSelect.selectedOptions) {
         products.push(option.dataset.smiles);
+        if (option.dataset.pes === 'true') {
+          pesLinks.push(option.dataset.pes);
+        }
       }
 
       if (substrates.length > 0 && products.length > 0) {
         const reaction = substrates.join('.') + '>>' + products.join('.');
         this.reactionImageUrl = '{% url "depict" %}?smirks=' + encodeURIComponent(reaction);
+        this.pes = pesLinks.length > 0;
       } else {
+        this.pes = false;
         this.reactionImageUrl = '';
       }
     },
@@ -106,6 +117,7 @@
                 {% for n in pathway.nodes %}
                   <option
                     data-smiles="{{ n.default_node_label.smiles }}"
+                    data-pes="{% if n.default_node_label.pes_link %}true{% else %}false{% endif %}"
                     value="{{ n.url }}"
                   >
                     {{ n.default_node_label.name|safe }}
@@ -132,6 +144,7 @@
                 {% for n in pathway.nodes %}
                   <option
                     data-smiles="{{ n.default_node_label.smiles }}"
+                    data-pes="{% if n.default_node_label.pes_link %}true{% else %}false{% endif %}"
                     value="{{ n.url }}"
                   >
                     {{ n.default_node_label.name|safe }}
@@ -144,6 +157,9 @@
 
         <div class="mb-3" x-show="reactionImageUrl" x-cloak>
           <img :src="reactionImageUrl" class="w-full" alt="Reaction preview" />
+          <div x-show="pes">
+            <span class='alert alert-info alert-soft'>The reaction contains a partially elucidated structure!</br>For visualization the representative structure is used. The pathway itself will show the actual partially elucidated structure.</span>
+          </div>
         </div>
       </form>
     </div>