diff --git a/base/tools/psb_ccdbldext.F90 b/base/tools/psb_ccdbldext.F90
index d3db5166..fc2652ff 100644
--- a/base/tools/psb_ccdbldext.F90
+++ b/base/tools/psb_ccdbldext.F90
@@ -169,11 +169,10 @@ Subroutine psb_ccdbldext(a,desc_a,novr,desc_ov,info, extype)
     return
   endif
 
-
-  if (extype_ == psb_ovt_asov_) then 
+  if ((extype_ == psb_ovt_asov_).and.&
+       & (.not.desc_ov%indxmap%row_extendable())) then 
     ! Need to switch to a format that can support overlap,
-    ! so far: LIST or HASH. This will also reinitialize properly
-    ! the inex map contents. Encapsulate choice
+    ! so far: LIST or HASH. Encapsulate choice
     ! in a separate method.
     call psb_cd_switch_ovl_indxmap(desc_ov,info) 
   end if
diff --git a/base/tools/psb_dcdbldext.F90 b/base/tools/psb_dcdbldext.F90
index c721b96a..d69f21b1 100644
--- a/base/tools/psb_dcdbldext.F90
+++ b/base/tools/psb_dcdbldext.F90
@@ -169,11 +169,10 @@ Subroutine psb_dcdbldext(a,desc_a,novr,desc_ov,info, extype)
     return
   endif
 
-
-  if (extype_ == psb_ovt_asov_) then 
+  if ((extype_ == psb_ovt_asov_).and.&
+       & (.not.desc_ov%indxmap%row_extendable())) then 
     ! Need to switch to a format that can support overlap,
-    ! so far: LIST or HASH. This will also reinitialize properly
-    ! the inex map contents. Encapsulate choice
+    ! so far: LIST or HASH. Encapsulate choice
     ! in a separate method.
     call psb_cd_switch_ovl_indxmap(desc_ov,info) 
   end if
diff --git a/base/tools/psb_scdbldext.F90 b/base/tools/psb_scdbldext.F90
index e6054bce..cec4b07e 100644
--- a/base/tools/psb_scdbldext.F90
+++ b/base/tools/psb_scdbldext.F90
@@ -169,11 +169,10 @@ Subroutine psb_scdbldext(a,desc_a,novr,desc_ov,info, extype)
     return
   endif
 
-
-  if (extype_ == psb_ovt_asov_) then 
+  if ((extype_ == psb_ovt_asov_).and.&
+       & (.not.desc_ov%indxmap%row_extendable())) then 
     ! Need to switch to a format that can support overlap,
-    ! so far: LIST or HASH. This will also reinitialize properly
-    ! the inex map contents. Encapsulate choice
+    ! so far: LIST or HASH. Encapsulate choice
     ! in a separate method.
     call psb_cd_switch_ovl_indxmap(desc_ov,info) 
   end if
diff --git a/base/tools/psb_zcdbldext.F90 b/base/tools/psb_zcdbldext.F90
index 71d6e30b..0c5f6d57 100644
--- a/base/tools/psb_zcdbldext.F90
+++ b/base/tools/psb_zcdbldext.F90
@@ -169,11 +169,10 @@ Subroutine psb_zcdbldext(a,desc_a,novr,desc_ov,info, extype)
     return
   endif
 
-
-  if (extype_ == psb_ovt_asov_) then 
+  if ((extype_ == psb_ovt_asov_).and.&
+       & (.not.desc_ov%indxmap%row_extendable())) then 
     ! Need to switch to a format that can support overlap,
-    ! so far: LIST or HASH. This will also reinitialize properly
-    ! the inex map contents. Encapsulate choice
+    ! so far: LIST or HASH. Encapsulate choice
     ! in a separate method.
     call psb_cd_switch_ovl_indxmap(desc_ov,info) 
   end if