diff --git a/src/Orchard.Specs/Hosting/WebHost.cs b/src/Orchard.Specs/Hosting/WebHost.cs
index fb86c392d..57e0b1a34 100644
--- a/src/Orchard.Specs/Hosting/WebHost.cs
+++ b/src/Orchard.Specs/Hosting/WebHost.cs
@@ -59,7 +59,10 @@ namespace Orchard.Specs.Hosting {
             //foreach (var filename in _knownThemes)
             //    Log("Available Theme: \"{0}\"", filename);
 
-            _knownBinAssemblies = _orchardWebPath.Combine("bin").GetFiles("*.dll").Select(f => f.FileNameWithoutExtension);
+            if (_orchardWebPath.Combine("bin").Exists) {
+                _knownBinAssemblies = _orchardWebPath.Combine("bin").GetFiles("*.dll").Select(f => f.FileNameWithoutExtension);
+            }
+
             //foreach (var filename in _knownBinAssemblies)
             //    Log("Assembly in ~/bin: \"{0}\"", filename);