diff --git a/agrilink_vocpro/src/app/pages/dashboard/page/graph/graph.component.html b/agrilink_vocpro/src/app/pages/dashboard/page/graph/graph.component.html
index 31fe216..a1ef947 100644
--- a/agrilink_vocpro/src/app/pages/dashboard/page/graph/graph.component.html
+++ b/agrilink_vocpro/src/app/pages/dashboard/page/graph/graph.component.html
@@ -20,7 +20,7 @@
     <div class="sensor-wrapper">
       <div class="title-with-dropdown">
         <div class="title">Sensor NPK 1</div>
-        <select class="form-select" style="margin-top: 10px" [(ngModel)]="selectedNPK1" (change)="updateCharts(); onResize()">
+        <select class="form-select" style="margin-top: 10px" [(ngModel)]="selectedNPK1" (change)="onResize()">
           <option value="npk">NPK</option>
           <option value="others">Lainnya</option>
         </select>
@@ -39,7 +39,7 @@
     <div class="sensor-wrapper">
       <div class="title-with-dropdown">
         <div class="title">Sensor NPK 2</div>
-        <select class="form-select" style="margin-top: 10px" [(ngModel)]="selectedNPK2" (change)="updateCharts(); onResize()">
+        <select class="form-select" style="margin-top: 10px" [(ngModel)]="selectedNPK2" (change)=" onResize()">
           <option value="npk">NPK</option>
           <option value="others">Lainnya</option>
         </select>
diff --git a/agrilink_vocpro/src/app/pages/dashboard/page/graph/graph.component.ts b/agrilink_vocpro/src/app/pages/dashboard/page/graph/graph.component.ts
index 5cc5a37..3929da9 100644
--- a/agrilink_vocpro/src/app/pages/dashboard/page/graph/graph.component.ts
+++ b/agrilink_vocpro/src/app/pages/dashboard/page/graph/graph.component.ts
@@ -82,15 +82,12 @@ export class GraphComponent implements OnInit, AfterViewInit, OnDestroy, OnChang
     this.updateCharts(); 
   }
 
-
   ngOnChanges(changes: SimpleChanges): void {
-    if (changes['interval'] && !changes['interval'].firstChange) {
-      this.selectedInterval = changes['interval'].currentValue; 
-      this.updateCharts(); 
+    if (changes['interval'] && changes['interval'].previousValue !== changes['interval'].currentValue) {
+        this.selectedInterval = changes['interval'].currentValue; 
     }
   }
 
-
   ngAfterViewInit(): void {
     this.onResize();
   }
@@ -157,7 +154,6 @@ export class GraphComponent implements OnInit, AfterViewInit, OnDestroy, OnChang
 
   fetchNPK2Data(savedTimeRange: string): void {
     const startEnd = this.getDate();
-    const timeRange = this.interval;
     this.sensorService.getSensorData('npk2', this.selectedNPK2, startEnd, savedTimeRange).subscribe({
       next: (response) => {
         console.log(savedTimeRange);
@@ -177,7 +173,7 @@ export class GraphComponent implements OnInit, AfterViewInit, OnDestroy, OnChang
   }
 
   updateCharts(): void {
-    const interval = this.selectedInterval;  
+    const interval = this.selectedInterval;
     
     Object.keys(this.charts).forEach(key => {
       if (this.charts[key]) {
@@ -191,7 +187,6 @@ export class GraphComponent implements OnInit, AfterViewInit, OnDestroy, OnChang
     this.fetchNPK2Data(interval);
   }
 
-  
 
   createChart(canvas: HTMLCanvasElement, response: ApiResponse, sensor: string, selectedOption: string): void {
     const ctx = canvas.getContext('2d');
diff --git a/agrilink_vocpro/src/app/pages/dashboard/page/historygraph/historygraph.component.html b/agrilink_vocpro/src/app/pages/dashboard/page/historygraph/historygraph.component.html
index 05ad280..d6cec24 100644
--- a/agrilink_vocpro/src/app/pages/dashboard/page/historygraph/historygraph.component.html
+++ b/agrilink_vocpro/src/app/pages/dashboard/page/historygraph/historygraph.component.html
@@ -11,7 +11,6 @@
         <button (click)="updateInterval('HOURLY')" [class.active-button]="selectedButton === 'hourly'">Hourly</button>
         <button (click)="updateInterval('DAILY')" [class.active-button]="selectedButton === 'daily'">Daily</button>        
     </div>
-    
 
     <div class="graph">
         <app-graph [interval]="selectedInterval"></app-graph>
diff --git a/agrilink_vocpro/src/app/pages/dashboard/page/historygraph/historygraph.component.ts b/agrilink_vocpro/src/app/pages/dashboard/page/historygraph/historygraph.component.ts
index ba07afd..0f2846b 100644
--- a/agrilink_vocpro/src/app/pages/dashboard/page/historygraph/historygraph.component.ts
+++ b/agrilink_vocpro/src/app/pages/dashboard/page/historygraph/historygraph.component.ts
@@ -42,7 +42,6 @@ export class HistorygraphComponent implements OnInit, OnDestroy {
             }
         }, 300);
     }
-    
 
     ngOnDestroy(): void {
         if (this.intervalId) {