diff --git a/src/Main/Base/Project/Src/Services/ParserService/ProjectContentRegistry.cs b/src/Main/Base/Project/Src/Services/ParserService/ProjectContentRegistry.cs
index 0f0b72268e..94587d508b 100644
--- a/src/Main/Base/Project/Src/Services/ParserService/ProjectContentRegistry.cs
+++ b/src/Main/Base/Project/Src/Services/ParserService/ProjectContentRegistry.cs
@@ -155,7 +155,7 @@ namespace ICSharpCode.Core
 		
 		static ReflectionProjectContent LoadProjectContent(string filename, string include)
 		{
-			ReflectionProjectContent pc = DomPersistence.LoadProjectContentByAssemblyName(Path.GetFullPath(filename));
+			ReflectionProjectContent pc = DomPersistence.LoadProjectContentByAssemblyName(filename);
 			if (pc != null) {
 				return pc;
 			}