diff --git a/src/thermophysicalModels/specie/equationOfState/PengRobinsonGas/PengRobinsonGasI.H b/src/thermophysicalModels/specie/equationOfState/PengRobinsonGas/PengRobinsonGasI.H
index dd2e31440221f519d7f29e9a2e1a9935a2bf3a7b..a7d323f3af7c9cf6da1370e253a1cedd423698ca 100644
--- a/src/thermophysicalModels/specie/equationOfState/PengRobinsonGas/PengRobinsonGasI.H
+++ b/src/thermophysicalModels/specie/equationOfState/PengRobinsonGas/PengRobinsonGasI.H
@@ -61,9 +61,9 @@ inline Foam::PengRobinsonGas<Specie>::PengRobinsonGas
 :
     Specie(name, pg),
     Tc_(pg.Tc_),
-    Pc_(pg.Pc_),
     Vc_(pg.Vc_),
     Zc_(pg.Zc_),
+    Pc_(pg.Pc_),
     omega_(pg.omega_)
 {}