diff --git a/Source/cmGeneratorExpressionNode.cxx b/Source/cmGeneratorExpressionNode.cxx
index 673dcb937..265485176 100644
--- a/Source/cmGeneratorExpressionNode.cxx
+++ b/Source/cmGeneratorExpressionNode.cxx
@@ -1554,7 +1554,6 @@ class ArtifactPdbTag;
 
 class ArtifactPathTag;
 class ArtifactDirTag;
-class ArtifactNameTag;
 
 //----------------------------------------------------------------------------
 template<typename ArtifactT>