diff --git a/include/cantera/oneD/Domain1D.h b/include/cantera/oneD/Domain1D.h
index c5a4ab4c2..76d30f2ac 100644
--- a/include/cantera/oneD/Domain1D.h
+++ b/include/cantera/oneD/Domain1D.h
@@ -48,6 +48,7 @@ public:
     Domain1D(size_t nv=1, size_t points=1,
              doublereal time = 0.0) :
         m_rdt(0.0),
+        m_nv(0),
         m_time(time),
         m_container(0),
         m_index(npos),