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-rw-r--r--src/main/Quadrupole.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/Quadrupole.h b/src/main/Quadrupole.h
index 1f4903b..32eac23 100644
--- a/src/main/Quadrupole.h
+++ b/src/main/Quadrupole.h
@@ -46,7 +46,7 @@ public:
virtual std::string getType() const {return "Quadrupole";}
- virtual void accept(ElementVisitor& v) {v.visit(this);}
+ virtual void accept(const ElementVisitor& v) const {v.visit(this);}
virtual Quadrupole* clone() const {return new Quadrupole(getEntryPosition(), getExitPosition(), getSectionRadius(), focusingCoefficient);}
};