diff --git a/src/Nazara/Shader/ShaderAstCloner.cpp b/src/Nazara/Shader/ShaderAstCloner.cpp
index 39754b7a9..90c7c909d 100644
--- a/src/Nazara/Shader/ShaderAstCloner.cpp
+++ b/src/Nazara/Shader/ShaderAstCloner.cpp
@@ -140,7 +140,7 @@ namespace Nz
 
 	void ShaderAstCloner::Visit(ShaderNodes::SwizzleOp& node)
 	{
-		PushExpression(ShaderNodes::SwizzleOp::Build(PopExpression(), node.components.data(), node.componentCount));
+		PushExpression(ShaderNodes::SwizzleOp::Build(CloneExpression(node.expression), node.components.data(), node.componentCount));
 	}
 
 	void ShaderAstCloner::Visit(ShaderNodes::BuiltinVariable& var)