diff --git a/Resample/Interparticle/IInterparticleStrategy.h b/Resample/Interparticle/IInterparticleStrategy.h
index c11f186eb4935f8bb554ec2b94ea40f6d4376e79..5f66591d46dcf571d77d827964828c8f95c7160b 100644
--- a/Resample/Interparticle/IInterparticleStrategy.h
+++ b/Resample/Interparticle/IInterparticleStrategy.h
@@ -25,6 +25,7 @@
 #include <vector>
 
 template <class T> class IntegratorMCMiser;
+
 class CoheringSubparticles;
 class DiffuseElement;
 class IInterference;