diff --git a/app/api/routes.py b/app/api/routes.py
index 4b87caa..454265c 100644
--- a/app/api/routes.py
+++ b/app/api/routes.py
@@ -1469,7 +1469,7 @@ async def get_workload_historical_details(
         memory_data = await historical_service.get_memory_usage_history(namespace, workload, time_range)
         
         # Generate recommendations
-        recommendations = await historical_service.generate_recommendations(namespace, workload)
+        recommendations = await historical_service.generate_recommendations(namespace, workload, time_range)
         
         return {
             "workload": workload,
diff --git a/app/services/historical_analysis.py b/app/services/historical_analysis.py
index 61a8e9f..567b08b 100644
--- a/app/services/historical_analysis.py
+++ b/app/services/historical_analysis.py
@@ -1435,12 +1435,12 @@ class HistoricalAnalysisService:
                 "error": str(e)
             }
 
-    async def generate_recommendations(self, namespace: str, workload: str) -> List[Dict[str, Any]]:
+    async def generate_recommendations(self, namespace: str, workload: str, time_range: str = "24h") -> List[Dict[str, Any]]:
         """Generate recommendations based on historical data"""
         try:
             # Get current usage data
-            cpu_data = await self.get_cpu_usage_history(namespace, workload, "24h")
-            memory_data = await self.get_memory_usage_history(namespace, workload, "24h")
+            cpu_data = await self.get_cpu_usage_history(namespace, workload, time_range)
+            memory_data = await self.get_memory_usage_history(namespace, workload, time_range)
             
             recommendations = []