diff --git a/src/lagrangian/molecularDynamics/molecule/molecule/moleculeIO.C b/src/lagrangian/molecularDynamics/molecule/molecule/moleculeIO.C
index 04ae825df59f5914dfc968ee84c58c13b387de62..fa2e2393048f5d88a457acf0d6385653e7ccafad 100644
--- a/src/lagrangian/molecularDynamics/molecule/molecule/moleculeIO.C
+++ b/src/lagrangian/molecularDynamics/molecule/molecule/moleculeIO.C
@@ -37,7 +37,7 @@ Foam::molecule::molecule
     bool readFields
 )
 :
-    Particle<molecule>(cloud, is, true),
+    Particle<molecule>(cloud, is, readFields),
     Q_(tensor::zero),
     v_(vector::zero),
     a_(vector::zero),