diff --git a/lib/SvelteUi/app/src/lib/DayPlot.svelte b/lib/SvelteUi/app/src/lib/DayPlot.svelte
index 89867e09..2623005f 100644
--- a/lib/SvelteUi/app/src/lib/DayPlot.svelte
+++ b/lib/SvelteUi/app/src/lib/DayPlot.svelte
@@ -6,14 +6,15 @@
     export let sysinfo;
 
     let config = {};
-    let max = 0;
-    let min = 0;
+    let max;
+    let min;
 
     $: {
         let i = 0;
         let yTicks = [];
         let xTicks = [];
         let points = [];
+        min = max = 0;
         let cur = addHours(new Date(), -24);
         let currentHour = new Date().getUTCHours();
         addHours(cur, sysinfo.clock_offset);
diff --git a/lib/SvelteUi/app/src/lib/MonthPlot.svelte b/lib/SvelteUi/app/src/lib/MonthPlot.svelte
index eb2837b0..aa21831c 100644
--- a/lib/SvelteUi/app/src/lib/MonthPlot.svelte
+++ b/lib/SvelteUi/app/src/lib/MonthPlot.svelte
@@ -6,14 +6,15 @@
     export let sysinfo;
 
     let config = {};
-    let max = 0;
-    let min = 0;
+    let max;
+    let min;
 
     $: {
         let i = 0;
         let yTicks = [];
         let xTicks = [];
         let points = [];
+        min = max = 0;
         let cur = new Date();
         let lm = new Date();
         addHours(cur, sysinfo.clock_offset);
diff --git a/lib/SvelteUi/app/src/lib/PricePlot.svelte b/lib/SvelteUi/app/src/lib/PricePlot.svelte
index 288f9ccf..4a65e7e3 100644
--- a/lib/SvelteUi/app/src/lib/PricePlot.svelte
+++ b/lib/SvelteUi/app/src/lib/PricePlot.svelte
@@ -6,8 +6,8 @@
     export let sysinfo;
 
     let config = {};
-    let max = 0;
-    let min = 0;
+    let max;
+    let min;
 
     $: {
         let currency = json.currency;
@@ -18,6 +18,7 @@
         let yTicks = [];
         let xTicks = [];
         let values = [];
+        min = max = 0;
         let cur = new Date();
         addHours(cur, sysinfo.clock_offset);
         for(i = hour; i<24; i++) {