diff --git a/src/CommandLine/Commands/WhereCommand.cs b/src/CommandLine/Commands/WhereCommand.cs
index c573dd6..997aaaf 100644
--- a/src/CommandLine/Commands/WhereCommand.cs
+++ b/src/CommandLine/Commands/WhereCommand.cs
@@ -13,7 +13,7 @@ public override void ExecuteCommand(WhereInputArgs input)
             var assemblyRegistration = Environment.AssemblyRegistry.GetAssembly(input.AssemblyName);
             if (assemblyRegistration == null)
             {
-                Console.WriteLine("Assembly '{0}' not registered. Have you ever built it on this machine?");
+                Console.WriteLine("Assembly '{0}' not registered. Have you ever built it on this machine?", input.AssemblyName);
                 return;
             }