diff --git a/PWGCF/Flow/Tasks/flowZdcEnergy.cxx b/PWGCF/Flow/Tasks/flowZdcEnergy.cxx
index 50a1b02bd16..43bb67fda7e 100644
--- a/PWGCF/Flow/Tasks/flowZdcEnergy.cxx
+++ b/PWGCF/Flow/Tasks/flowZdcEnergy.cxx
@@ -47,7 +47,7 @@ using namespace o2::framework::expressions;
 struct flowZdcEnergy {
 
   struct : ConfigurableGroup{
-      O2_DEFINE_CONFIGURABLE(cfgVtxZ, float, 10.f, "Accepted z-vertex range")} evsel;
+             O2_DEFINE_CONFIGURABLE(cfgVtxZ, float, 10.f, "Accepted z-vertex range")} evsel;
 
   O2_DEFINE_CONFIGURABLE(cfgEtaMax, float, 0.8f, "Maximum track #eta")
   O2_DEFINE_CONFIGURABLE(cfgPtMin, float, 0.2f, "Minimum track #P_{t}")