diff --git a/src/lagrangian/Allwmake b/src/lagrangian/Allwmake
index b3ab63389938afb14bcc05d8a21779a09c1033cb..567f7a10defa3445265239cb9018bddfeed28790 100755
--- a/src/lagrangian/Allwmake
+++ b/src/lagrangian/Allwmake
@@ -5,3 +5,4 @@ wmake libso basic
 wmake libso solidParticle
 wmake libso intermediate
 wmake libso dieselSpray
+wmake libso molecule