diff --git a/package.json b/package.json
index 4fa4f9b..5992d79 100644
--- a/package.json
+++ b/package.json
@@ -35,6 +35,10 @@
   },
   "author": "teppo.kurki@iki.fi",
   "license": "Apache-2.0",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/canboat/visual-analyzer.git"
+  },
   "devDependencies": {
     "@babel/core": "^7.11.6",
     "@babel/preset-react": "^7.10.4",
diff --git a/src/components/SentencePanel.tsx b/src/components/SentencePanel.tsx
index e214690..5613fab 100644
--- a/src/components/SentencePanel.tsx
+++ b/src/components/SentencePanel.tsx
@@ -249,13 +249,14 @@ export const SentencePanel = (props: SentencePanelProps) => {
     [],
   )
 
-  if (pgnData === undefined || pgnData === null) {
+  if (pgnData === undefined || pgnData === null || pgnData.getDefinition === undefined) {
     return <div>Select a PGN to view its data</div>
   }
 
+  //console.debug('pgnData', pgnData)
   //let definition: Definition = pgnData.getDefinition()
   let definition = props.definition || pgnData.getDefinition()
-  //console.debug('pgnData', pgnData)
+  
   return (
     <div
       style={{