diff --git a/src/charts/chart.js b/src/charts/chart.js
index 77f278e..04592a7 100644
--- a/src/charts/chart.js
+++ b/src/charts/chart.js
@@ -23,10 +23,14 @@ export function removeSymbolChangedCallback(cb) {
 }
 
 function changeSymbol(symbol) {
-    const info = lookupSymbol(symbol.full_name)
-    lastSymbolChangedArgs = info
-    symbolChangedCbs.forEach((cb)=>cb(info))
-    co.selectedSymbol = info
+    if (symbol===null)
+        co.selectedSymbol = null
+    else {
+        const info = lookupSymbol(symbol.full_name)
+        lastSymbolChangedArgs = info
+        symbolChangedCbs.forEach((cb) => cb(info))
+        co.selectedSymbol = info
+    }
 }
 
 
diff --git a/src/charts/datafeed.js b/src/charts/datafeed.js
index b03b35d..6f45a6c 100644
--- a/src/charts/datafeed.js
+++ b/src/charts/datafeed.js
@@ -37,15 +37,18 @@ export function initFeeDropdown(w) {
 function updateFeeDropdown() {
 	if (feeDropdown===null) return
 	const symbolItem = useChartOrderStore().selectedSymbol
-	const feeOpts = {
-		items: symbolItem.pools.map((p)=> {
+	let items
+	if (symbolItem===null)
+		items = [{title: '0.00%'}]
+	else {
+		items = symbolItem.pools.map((p)=> {
 			return {
 				title: (p[1]/10000).toFixed(2)+'%',
 				onSelect: ()=>selectPool(p),
 			}
 		})
 	}
-	feeDropdown.applyOptions(feeOpts)
+	feeDropdown.applyOptions({items})
 }
 
 
diff --git a/src/charts/ohlc.js b/src/charts/ohlc.js
index 8f216be..71b4e51 100644
--- a/src/charts/ohlc.js
+++ b/src/charts/ohlc.js
@@ -125,7 +125,7 @@ export async function loadOHLC (symbol, contract, from, to, tvRes) {
         inverted ^= symbol.x.data.inverted
     }
     else {
-        baseURL = `//ohlc/`
+        baseURL = `/ohlc/`
         chainId = useStore().chainId
     }
     baseURL += `${chainId}/${contract}/`
diff --git a/src/components/NeedsSigner.vue b/src/components/NeedsSigner.vue
index 6546ffb..b640354 100644
--- a/src/components/NeedsSigner.vue
+++ b/src/components/NeedsSigner.vue
@@ -6,9 +6,6 @@
 <!--      <v-icon icon="mdi-hand-wave" color="grey"/>-->
       Welcome to Dexorder Beta!
     </v-card-title>
-    <v-card-text>
-      This beta test uses mock coins on the Arbitrum Sepolia testnet.
-    </v-card-text>
     <v-card-text>
       Play with the order builder without an account by clicking on the <logo class="logo-small"/> logo or on
       the <v-icon icon="mdi-chart-timeline-variant"/> button.