diff --git a/src/mlpack/methods/decision_tree/fitness_functions/fitness_functions.hpp b/src/mlpack/methods/decision_tree/fitness_functions/fitness_functions.hpp
index a73fcd19c6..2ee82c29ca 100644
--- a/src/mlpack/methods/decision_tree/fitness_functions/fitness_functions.hpp
+++ b/src/mlpack/methods/decision_tree/fitness_functions/fitness_functions.hpp
@@ -1,5 +1,4 @@
 #include "gini_gain.hpp"
 #include "information_gain.hpp"
 #include "mad_gain.hpp"
-#include "mse_gain.hpp"
-#include "sse_gain.hpp"
\ No newline at end of file
+#include "mse_gain.hpp"
\ No newline at end of file