diff --git a/src/stock_manager.py b/src/stock_manager.py
index a7dfbd29..72cea983 100644
--- a/src/stock_manager.py
+++ b/src/stock_manager.py
@@ -357,7 +357,7 @@ class StockManager:
         # Draw mini chart on the right
         chart_width = 30  # Increased from 20 to 30
         chart_height = 32  # Increased from 32 to match text height
-        chart_x = scroll_width - chart_width - 5  # Shift one width to the right (using scroll_width instead of width)
+        chart_x = scroll_width - chart_width - 5  # Shift one width to the right
         chart_y = 0  # Align with top of display
         
         # Draw chart background
@@ -366,30 +366,31 @@ class StockManager:
         
         # Get price history for chart
         price_history = data.get('price_history', [])
-        if len(price_history) >= 2:  # Need at least 2 points to draw a line
+        if price_history and len(price_history) >= 2:  # Need at least 2 points to draw a line
             # Extract prices from price history
             prices = [p['price'] for p in price_history]
-            # Calculate price range with padding to avoid flat lines
-            min_price = min(prices) * 0.99  # 1% padding below
-            max_price = max(prices) * 1.01  # 1% padding above
-            price_range = max_price - min_price
-            
-            if price_range == 0:  # If all prices are the same
-                price_range = min_price * 0.01  # Use 1% of price as range
-            
-            # Calculate points for the line
-            points = []
-            for i, price_data in enumerate(price_history):
-                price = price_data['price']
-                # Calculate x position with proper spacing
-                x = chart_x + 1 + (i * (chart_width - 2) // (len(price_history) - 1))
-                # Calculate y position (inverted because y=0 is at top)
-                y = chart_y + chart_height - 1 - int((price - min_price) * (chart_height - 2) / price_range)
-                points.append((x, y))
-            
-            # Draw the line
-            if len(points) >= 2:
-                draw.line(points, fill=color, width=1)
+            if prices:  # Make sure we have prices
+                # Calculate price range with padding to avoid flat lines
+                min_price = min(prices) * 0.99  # 1% padding below
+                max_price = max(prices) * 1.01  # 1% padding above
+                price_range = max_price - min_price
+                
+                if price_range == 0:  # If all prices are the same
+                    price_range = min_price * 0.01  # Use 1% of price as range
+                
+                # Calculate points for the line
+                points = []
+                for i, price_data in enumerate(price_history):
+                    price = price_data['price']
+                    # Calculate x position with proper spacing
+                    x = chart_x + 1 + (i * (chart_width - 2) // (len(price_history) - 1))
+                    # Calculate y position (inverted because y=0 is at top)
+                    y = chart_y + chart_height - 1 - int((price - min_price) * (chart_height - 2) / price_range)
+                    points.append((x, y))
+                
+                # Draw the line with increased width for visibility
+                if len(points) >= 2:
+                    draw.line(points, fill=color, width=2)  # Increased line width
         
         # Crop to show only the visible portion based on scroll position
         visible_image = image.crop((scroll_position, 0, scroll_position + width, height))