diff --git a/Solver/dgConservationLawPerfectGas.cpp b/Solver/dgConservationLawPerfectGas.cpp
index f3ab1a21de48772d51ad53bf04eee15c65a9ff79..b6fc735e69acb626f8b66ee898b4725b4f803c63 100644
--- a/Solver/dgConservationLawPerfectGas.cpp
+++ b/Solver/dgConservationLawPerfectGas.cpp
@@ -668,6 +668,7 @@ dataCacheDouble *dgPerfectGasLaw2d::newClipToPhysics( dataCacheMap &cacheMap) co
 }
 
 dgPerfectGasLaw2d::dgPerfectGasLaw2d() 
+ : _kappaFunction(0), _muFunction(0), _sourceFunction(0)
 {
   _nbf = 4; // \rho \rho u \rho v \rho e
 }