diff --git a/src/molecules/AutoPasSimpleMolecule.h b/src/molecules/AutoPasSimpleMolecule.h
index db5760836..a34a8f4d8 100644
--- a/src/molecules/AutoPasSimpleMolecule.h
+++ b/src/molecules/AutoPasSimpleMolecule.h
@@ -19,7 +19,7 @@ class AutoPasSimpleMolecule final : public MoleculeInterface, public autopas::Pa
 public:
 	explicit AutoPasSimpleMolecule(unsigned long id = 0, Component* component = nullptr, double rx = 0., double ry = 0.,
 								   double rz = 0., double vx = 0., double vy = 0., double vz = 0., double qw = 1.,
-								   double qx = 1., double qy = 0., double qz = 0., double Dx = 0., double Dy = 0.,
+								   double qx = 0., double qy = 0., double qz = 0., double Dx = 0., double Dy = 0.,
 								   double Dz = 0.);
 
 	AutoPasSimpleMolecule(const AutoPasSimpleMolecule& m) = default;
diff --git a/src/molecules/FullMolecule.h b/src/molecules/FullMolecule.h
index 014ad5151..0395318aa 100644
--- a/src/molecules/FullMolecule.h
+++ b/src/molecules/FullMolecule.h
@@ -25,7 +25,7 @@ class FullMolecule : public MoleculeInterface {
 	FullMolecule(unsigned long id = 0, Component *component = nullptr,
 	         double rx = 0., double ry = 0., double rz = 0.,
 	         double vx = 0., double vy = 0., double vz = 0.,
-	         double qw = 1., double qx = 1., double qy = 0., double qz = 0.,
+	         double qw = 1., double qx = 0., double qy = 0., double qz = 0.,
 	         double Dx = 0., double Dy = 0., double Dz = 0.
 	);
 	FullMolecule(const FullMolecule& m);