diff --git a/src/libs/vpatterndb/calculator.cpp b/src/libs/vpatterndb/calculator.cpp
index 03da8fbbb..5f8e8edc4 100644
--- a/src/libs/vpatterndb/calculator.cpp
+++ b/src/libs/vpatterndb/calculator.cpp
@@ -89,7 +89,6 @@ qreal Calculator::EvalFormula(const QHash<QString, QSharedPointer<VInternalVaria
 
     SetExpr(formula);
 
-    result = 0;
     result = Eval();
 
     QMap<int, QString> tokens = this->GetTokens();