diff --git a/src/BayesWaveEvidence.c b/src/BayesWaveEvidence.c
index bd0a10d048ef5ea41bfa6005fc2fccc9c3fae2d0..7d2fe711ce6940f5958a7829281dd0574fd3e77f 100644
--- a/src/BayesWaveEvidence.c
+++ b/src/BayesWaveEvidence.c
@@ -2410,7 +2410,7 @@ void LaplaceApproximation(struct Data *data, struct Model *model, struct Chain *
       dim+=4;
       logV += log(LAL_TWOPI); //r.a.
       logV += log(2.);        //sindec
-      logV += log(LAL_TWOPI); //psi
+      logV += log(LAL_PI); //psi
       logV += log(2.);        //ecc
 
       //intrinsic