diff --git a/Core/Aggregate/InterferenceFunctionHardDisk.h b/Core/Aggregate/InterferenceFunctionHardDisk.h
index b176c2ffe1a8ec43eb1c66c1c022ebeef63fd4a5..3845affa62eaa900c23695297a2b178e177aeda0 100644
--- a/Core/Aggregate/InterferenceFunctionHardDisk.h
+++ b/Core/Aggregate/InterferenceFunctionHardDisk.h
@@ -28,7 +28,7 @@
 class BA_CORE_API_ InterferenceFunctionHardDisk : public IInterferenceFunction
 {
 public:
-    InterferenceFunctionHardDisk(double radius, double density, double position_var=0);
+    InterferenceFunctionHardDisk(double radius, double density, double position_var = 0);
     ~InterferenceFunctionHardDisk() final = default;
 
     InterferenceFunctionHardDisk* clone() const override final;