diff --git a/src/mlpack/methods/ann/gan/gan.hpp b/src/mlpack/methods/ann/gan/gan.hpp
index a88b21e0d0..0fa9fde744 100644
--- a/src/mlpack/methods/ann/gan/gan.hpp
+++ b/src/mlpack/methods/ann/gan/gan.hpp
@@ -105,8 +105,8 @@ class GAN
    * @return The final objective of the trained model (NaN or Inf on error).
    */
   template<typename OptimizerType, typename... CallbackTypes>
-  double Train(OptimizerType& Optimizer,
-	       CallbackTypes&&... callbacks);
+  double Train(OptimizerType& Optimizer, 
+               CallbackTypes&&... callbacks);
 
   /**
    * Evaluate function for the Standard GAN and DCGAN.
diff --git a/src/mlpack/methods/ann/gan/gan_impl.hpp b/src/mlpack/methods/ann/gan/gan_impl.hpp
index 20e9407de6..ed822b6904 100644
--- a/src/mlpack/methods/ann/gan/gan_impl.hpp
+++ b/src/mlpack/methods/ann/gan/gan_impl.hpp
@@ -191,8 +191,7 @@ template<
   typename PolicyType
 >
 template<typename OptimizerType, typename... CallbackTypes>
-double GAN<Model, InitializationRuleType, Noise, PolicyType>::Train(
-								    OptimizerType& Optimizer, CallbackTypes&&... callbacks)
+double GAN<Model, InitializationRuleType, Noise, PolicyType>::Train(OptimizerType& Optimizer, CallbackTypes&&... callbacks)
 {
   if (!reset)
     Reset();