diff --git a/src/anthem/Simplification.cpp b/src/anthem/Simplification.cpp
index 4b6d149..188fd6e 100644
--- a/src/anthem/Simplification.cpp
+++ b/src/anthem/Simplification.cpp
@@ -4,8 +4,8 @@
 
 #include <anthem/ASTCopy.h>
 #include <anthem/Equality.h>
-#include <anthem/output/AST.h>
 #include <anthem/SimplificationVisitors.h>
+#include <anthem/output/AST.h>
 
 namespace anthem
 {