diff --git a/Core/FormFactors/src/FormFactorBox.cpp b/Core/FormFactors/src/FormFactorBox.cpp
index 347c3e18aef498415c5793b83821aa8bfd3ccf32..270c17ac5fd18365baceb03b1e8aa5f5c5d064e3 100644
--- a/Core/FormFactors/src/FormFactorBox.cpp
+++ b/Core/FormFactors/src/FormFactorBox.cpp
@@ -31,7 +31,7 @@ complex_t FormFactorBox::evaluate_for_q(const cvector_t& q) const
     complex_t qyWdiv2 = m_width*q.y()/2.0;
     complex_t qzHdiv2 = m_height*q.z()/2.0;
 
-    return 4*m_height*m_length*m_width*
+    return m_height*m_length*m_width*
         std::exp(complex_t(0.,1.)*qzHdiv2) *
         MathFunctions::Sinc(qxRdiv2) *
         MathFunctions::Sinc(qyWdiv2) *