diff --git a/internal/handlers/followup_handler.go b/internal/handlers/followup_handler.go
index 86f5c89..fd26f40 100644
--- a/internal/handlers/followup_handler.go
+++ b/internal/handlers/followup_handler.go
@@ -277,15 +277,17 @@ func (h *FollowUpHandler) GetCustomerList(w http.ResponseWriter, r *http.Request
 		CustomerName string `json:"customerName"`
 	}
 
-	// Return all customers (including duplicates with same name but different IDs)
-	// This is needed so that trial periods can map all customer IDs to names
+	// Deduplicate by customer name - only show each unique customer name once in dropdown
+	// Use a map to track which customer names we've already added
+	seenNames := make(map[string]bool)
 	var customerList []CustomerInfo
 	for _, customer := range customers {
-		if customer.CustomerName != "" {
+		if customer.CustomerName != "" && !seenNames[customer.CustomerName] {
 			customerList = append(customerList, CustomerInfo{
 				ID:           customer.ID,
 				CustomerName: customer.CustomerName,
 			})
+			seenNames[customer.CustomerName] = true
 			fmt.Printf("DEBUG: Added customer: ID=%s, Name=%s\n", customer.ID, customer.CustomerName)
 		}
 	}