diff --git a/src/spectrum/model/spectrum-value.cc b/src/spectrum/model/spectrum-value.cc
index 2a93bad26..80855328a 100644
--- a/src/spectrum/model/spectrum-value.cc
+++ b/src/spectrum/model/spectrum-value.cc
@@ -32,6 +32,7 @@ namespace ns3 {
 
 
 SpectrumValue::SpectrumValue ()
+  : m_values (0)
 { 
 }