diff --git a/src/common/micro/mode_ice4_sedimentation_split.F90 b/src/common/micro/mode_ice4_sedimentation_split.F90
index 4390221369162981bf149baa01d972a171634a39..4864c1472fd78e896c504ba1b5d2fd60a9548221 100644
--- a/src/common/micro/mode_ice4_sedimentation_split.F90
+++ b/src/common/micro/mode_ice4_sedimentation_split.F90
@@ -336,7 +336,8 @@ END IF
 PINPRX(:,:) = 0.
 ZINVTSTEP=1./PTSTEP
 ZRSMIN(:) = ICED%XRTMIN(:) * ZINVTSTEP
-ZREMAINT(:,:) = PTSTEP
+ZREMAINT(:,:) = 0.
+ZREMAINT(D%NIB:D%NIE,D%NJB:D%NJE) = PTSTEP
 !
 DO WHILE (ANY(ZREMAINT>0.))
   ISEDIM = 0