diff --git a/src/Commands/CostSettings.cs b/src/Commands/CostSettings.cs
index bdd350e..f9ead47 100644
--- a/src/Commands/CostSettings.cs
+++ b/src/Commands/CostSettings.cs
@@ -31,6 +31,6 @@ public class CostSettings : LogCommandSettings
     public int OthersCutoff { get; set; } = 10;
     
     [CommandOption("--query")]
-    [Description("JMESPath query string. See http://jmespath.org/ for more information and examples.")]
+    [Description("JMESPath query string, applicable for the Json output only. See http://jmespath.org/ for more information and examples.")]
     public string Query { get; set; } = string.Empty;
 }
\ No newline at end of file
diff --git a/src/OutputFormatters/MarkdownOutputFormatter.cs b/src/OutputFormatters/MarkdownOutputFormatter.cs
index d339249..fb49f63 100644
--- a/src/OutputFormatters/MarkdownOutputFormatter.cs
+++ b/src/OutputFormatters/MarkdownOutputFormatter.cs
@@ -89,7 +89,8 @@ public override Task WriteAccumulatedCost(AccumulatedCostSettings settings,Accum
         Console.WriteLine("   title Cost by service");
         foreach (var cost in accumulatedCostDetails.ByServiceNameCosts.TrimList(threshold: settings.OthersCutoff))
         {
-            Console.WriteLine($"   \"{cost.ItemName}\" : {cost.Cost.ToString("F2", culture)}");
+            var name = string.IsNullOrWhiteSpace(cost.ItemName) ? "(Unknown)" : cost.ItemName;
+            Console.WriteLine($"   \"{name}\" : {cost.Cost.ToString("F2", culture)}");
         }
         Console.WriteLine("```");
 
@@ -110,7 +111,8 @@ public override Task WriteAccumulatedCost(AccumulatedCostSettings settings,Accum
         Console.WriteLine("   title Cost by location");
         foreach (var cost in accumulatedCostDetails.ByLocationCosts.TrimList(threshold: settings.OthersCutoff))
         {
-            Console.WriteLine($"   \"{cost.ItemName}\" : {cost.Cost.ToString("F2", culture)}");
+            var name = string.IsNullOrWhiteSpace(cost.ItemName) ? "(Unknown)" : cost.ItemName;
+            Console.WriteLine($"   \"{name}\" : {cost.Cost.ToString("F2", culture)}");
         }
         Console.WriteLine("```");
 
@@ -131,7 +133,8 @@ public override Task WriteAccumulatedCost(AccumulatedCostSettings settings,Accum
         Console.WriteLine("   title Cost by resource group");
         foreach (var cost in accumulatedCostDetails.ByResourceGroupCosts.TrimList(threshold: settings.OthersCutoff))
         {
-            Console.WriteLine($"   \"{cost.ItemName}\" : {cost.Cost.ToString("F2", culture)}");
+            var name = string.IsNullOrWhiteSpace(cost.ItemName) ? "(Unknown)" : cost.ItemName;
+            Console.WriteLine($"   \"{name}\" : {cost.Cost.ToString("F2", culture)}");
         }
         Console.WriteLine("```");