diff --git a/src/io/io_read_regotrack.f90 b/src/io/io_read_regotrack.f90
index 853dd51a..c880a91c 100644
--- a/src/io/io_read_regotrack.f90
+++ b/src/io/io_read_regotrack.f90
@@ -24,7 +24,7 @@ subroutine io_read_regotrack(user,surf,domain)
 
    ! Arguments
    type(usertype),intent(in) :: user
-   type(surftype),dimension(:,:),intent(out) :: surf
+   type(surftype),dimension(:,:),intent(inout) :: surf
    type(domaintype),intent(in)    :: domain
 
    ! Internals
diff --git a/src/io/module_io.f90 b/src/io/module_io.f90
index 3ea2873a..a6be9cfe 100644
--- a/src/io/module_io.f90
+++ b/src/io/module_io.f90
@@ -63,7 +63,7 @@ subroutine io_read_regotrack(user,surf,domain)
       use module_globals
       implicit none
       type(usertype),intent(in) :: user
-      type(surftype),dimension(:,:),intent(out) :: surf
+      type(surftype),dimension(:,:),intent(inout) :: surf
       type(domaintype),intent(in)    :: domain
       end subroutine io_read_regotrack
   end interface