diff --git a/ICSharpCode.Decompiler/Util/ResXResourceWriter.cs b/ICSharpCode.Decompiler/Util/ResXResourceWriter.cs
index 80d7123534..09fa9f8650 100644
--- a/ICSharpCode.Decompiler/Util/ResXResourceWriter.cs
+++ b/ICSharpCode.Decompiler/Util/ResXResourceWriter.cs
@@ -312,6 +312,9 @@ public virtual void Dispose()
 
 		public void Generate()
 		{
+			if (writer == null)
+				InitWriter();
+
 			if (written)
 				throw new InvalidOperationException("The resource is already generated.");