diff --git a/resources/views/invoices/edit.blade.php b/resources/views/invoices/edit.blade.php
index 3ca6acafba59..26b42a0bd90b 100644
--- a/resources/views/invoices/edit.blade.php
+++ b/resources/views/invoices/edit.blade.php
@@ -998,47 +998,59 @@
         })
 
         // Initialize document upload
-        dropzone = new Dropzone('#document-upload .dropzone', {
-            url:{!! json_encode(url('document')) !!},
-            params:{
-                _token:"{{ Session::getToken() }}"
-            },
-            acceptedFiles:{!! json_encode(implode(',',\App\Models\Document::$allowedMimes)) !!},
-            addRemoveLinks:true,
-            @foreach(['default_message', 'fallback_message', 'fallback_text', 'file_too_big', 'invalid_file_type', 'response_error', 'cancel_upload', 'cancel_upload_confirmation', 'remove_file'] as $key)
-                "dict{{Utils::toClassCase($key)}}":"{{trans('texts.dropzone_'.$key)}}",
-            @endforeach
-            maxFileSize:{{floatval(MAX_DOCUMENT_SIZE/1000)}},
-        });
-        if(dropzone instanceof Dropzone){
-            dropzone.on("addedfile",handleDocumentAdded);
-            dropzone.on("removedfile",handleDocumentRemoved);
-            dropzone.on("success",handleDocumentUploaded);
-            for (var i=0; i<model.invoice().documents().length; i++) {
-                var document = model.invoice().documents()[i];
-                var mockFile = {
-                    name:document.name(),
-                    size:document.size(),
-                    type:document.type(),
-                    public_id:document.public_id(),
-                    status:Dropzone.SUCCESS,
-                    accepted:true,
-                    url:document.preview_url()||document.url(),
-                    mock:true,
-                    index:i
-                };
-
-                dropzone.emit('addedfile', mockFile);
-                dropzone.emit('complete', mockFile);
-                if(document.preview_url()){
-                    dropzone.emit('thumbnail', mockFile, document.preview_url()||document.url());
-                }
-                else if(document.type()=='jpeg' || document.type()=='png' || document.type()=='svg'){
-                    dropzone.emit('thumbnail', mockFile, document.url());
-                }
-                dropzone.files.push(mockFile);
+        window.dropzone = false;
+        $('a[data-toggle="tab"]').on('shown.bs.tab', function (e) {
+            if (window.dropzone) {
+                return;
             }
-        }
+
+            var target = $(e.target).attr('href') // activated tab
+            if (target != '#attached-documents') {
+                return;
+            }
+
+            window.dropzone = new Dropzone('#document-upload .dropzone', {
+                url:{!! json_encode(url('document')) !!},
+                params:{
+                    _token:"{{ Session::getToken() }}"
+                },
+                acceptedFiles:{!! json_encode(implode(',',\App\Models\Document::$allowedMimes)) !!},
+                addRemoveLinks:true,
+                @foreach(['default_message', 'fallback_message', 'fallback_text', 'file_too_big', 'invalid_file_type', 'response_error', 'cancel_upload', 'cancel_upload_confirmation', 'remove_file'] as $key)
+                    "dict{{Utils::toClassCase($key)}}":"{{trans('texts.dropzone_'.$key)}}",
+                @endforeach
+                maxFileSize:{{floatval(MAX_DOCUMENT_SIZE/1000)}},
+            });
+            if(dropzone instanceof Dropzone){
+                dropzone.on("addedfile",handleDocumentAdded);
+                dropzone.on("removedfile",handleDocumentRemoved);
+                dropzone.on("success",handleDocumentUploaded);
+                for (var i=0; i<model.invoice().documents().length; i++) {
+                    var document = model.invoice().documents()[i];
+                    var mockFile = {
+                        name:document.name(),
+                        size:document.size(),
+                        type:document.type(),
+                        public_id:document.public_id(),
+                        status:Dropzone.SUCCESS,
+                        accepted:true,
+                        url:document.preview_url()||document.url(),
+                        mock:true,
+                        index:i
+                    };
+
+                    dropzone.emit('addedfile', mockFile);
+                    dropzone.emit('complete', mockFile);
+                    if(document.preview_url()){
+                        dropzone.emit('thumbnail', mockFile, document.preview_url());
+                    }
+                    else if(document.type()=='jpeg' || document.type()=='png' || document.type()=='svg'){
+                        dropzone.emit('thumbnail', mockFile, document.url());
+                    }
+                    dropzone.files.push(mockFile);
+                }
+            }
+        });
         @endif
 	});