diff --git a/src/MNH/ini_modeln.f90 b/src/MNH/ini_modeln.f90
index ee0eedb62c97c0321140fde8c67fde61d1798a5d..bd09ae13f81052ed3220317a853f2e60c04f1ba8 100644
--- a/src/MNH/ini_modeln.f90
+++ b/src/MNH/ini_modeln.f90
@@ -1662,6 +1662,59 @@ IF ((KMI==1).AND.(.NOT. LSTEADYLS)) THEN
                XLBXUS,XLBXVS,XLBXWS,XLBXTHS,XLBXTKES,XLBXRS,XLBXSVS,          &
                XLBYUS,XLBYVS,XLBYWS,XLBYTHS,XLBYTKES,XLBYRS,XLBYSVS           )
   CALL MPPDB_CHECK3D(XUT,"INI_MODEL_N-after ini_cpl::XUT",PRECISION)
+!
+      DO JSV=NSV_CHEMBEG,NSV_CHEMEND
+        XLBXSVS(:,:,:,JSV)=MAX(XLBXSVS(:,:,:,JSV),0.)
+        XLBYSVS(:,:,:,JSV)=MAX(XLBYSVS(:,:,:,JSV),0.)
+      ENDDO
+      !
+      DO JSV=NSV_LNOXBEG,NSV_LNOXEND
+        XLBXSVS(:,:,:,JSV)=MAX(XLBXSVS(:,:,:,JSV),0.)
+        XLBYSVS(:,:,:,JSV)=MAX(XLBYSVS(:,:,:,JSV),0.)
+      ENDDO
+      !
+      DO JSV=NSV_AERBEG,NSV_AEREND
+        XLBXSVS(:,:,:,JSV)=MAX(XLBXSVS(:,:,:,JSV),0.)
+        XLBYSVS(:,:,:,JSV)=MAX(XLBYSVS(:,:,:,JSV),0.)
+      ENDDO
+      !
+      DO JSV=NSV_DSTBEG,NSV_DSTEND
+        XLBXSVS(:,:,:,JSV)=MAX(XLBXSVS(:,:,:,JSV),0.)
+        XLBYSVS(:,:,:,JSV)=MAX(XLBYSVS(:,:,:,JSV),0.)
+      ENDDO
+      !
+      DO JSV=NSV_DSTDEPBEG,NSV_DSTDEPEND
+        XLBXSVS(:,:,:,JSV)=MAX(XLBXSVS(:,:,:,JSV),0.)
+        XLBYSVS(:,:,:,JSV)=MAX(XLBYSVS(:,:,:,JSV),0.)
+      ENDDO
+      !
+      DO JSV=NSV_SLTBEG,NSV_SLTEND
+        XLBXSVS(:,:,:,JSV)=MAX(XLBXSVS(:,:,:,JSV),0.)
+        XLBYSVS(:,:,:,JSV)=MAX(XLBYSVS(:,:,:,JSV),0.)
+      ENDDO
+      !
+      DO JSV=NSV_SLTDEPBEG,NSV_SLTDEPEND
+        XLBXSVS(:,:,:,JSV)=MAX(XLBXSVS(:,:,:,JSV),0.)
+        XLBYSVS(:,:,:,JSV)=MAX(XLBYSVS(:,:,:,JSV),0.)
+      ENDDO
+      !
+      DO JSV=NSV_PPBEG,NSV_PPEND
+        XLBXSVS(:,:,:,JSV)=MAX(XLBXSVS(:,:,:,JSV),0.)
+        XLBYSVS(:,:,:,JSV)=MAX(XLBYSVS(:,:,:,JSV),0.)
+      ENDDO
+      !
+#ifdef MNH_FOREFIRE
+      DO JSV=NSV_FFBEG,NSV_FFEND
+        XLBXSVS(:,:,:,JSV)=MAX(XLBXSVS(:,:,:,JSV),0.)
+        XLBYSVS(:,:,:,JSV)=MAX(XLBYSVS(:,:,:,JSV),0.)
+      ENDDO
+      !
+#endif
+      DO JSV=NSV_CSBEG,NSV_CSEND
+        XLBXSVS(:,:,:,JSV)=MAX(XLBXSVS(:,:,:,JSV),0.)
+        XLBYSVS(:,:,:,JSV)=MAX(XLBYSVS(:,:,:,JSV),0.)
+      ENDDO
+!
 END IF
 !
 IF ( KMI > 1) THEN