diff --git a/src/js/datatypeCleanupJS.js b/src/js/datatypeCleanupJS.js
index 78275bcd539bdd8b12cefd3711a596afecd5f214..dfdeb26ed532159478166a978178ad34289b0d4c 100644
--- a/src/js/datatypeCleanupJS.js
+++ b/src/js/datatypeCleanupJS.js
@@ -1526,7 +1526,7 @@ window.FacilityDatatypeCleanup = (function() {
 		V.dairyPrepUpgrade = Math.clamp(+V.dairyPrepUpgrade, 0, 1) || 0;
 		V.dairyHyperPregRemodel = Math.clamp(+V.dairyHyperPregRemodel, 0, 1) || 0;
 		V.dairyImplantsSetting = Math.clamp(+V.dairyImplantsSetting, 0, 3) || 0;
-		V.dairyWeightSetting = Math.clamp(+V.dairyWeightSetting, 0, 4) || 0;
+		V.dairyWeightSetting = Math.clamp(+V.dairyWeightSetting, -1, 4) || 0;
 		/* bioreactors */
 		V.bioreactorsAnnounced = Math.clamp(+V.bioreactorsAnnounced, 0, 1) || 0;
 		V.createBioreactors = Math.clamp(+V.createBioreactors, 0, 1) || 0;