1 files changed, 1 insertions, 1 deletions
diff --git a/src/H5T.c b/src/H5T.c
index a8b4fcd..4dd1984 100644
--- a/src/H5T.c
+++ b/src/H5T.c
@@ -2120,7 +2120,7 @@ H5Tset_size(hid_t type_id, size_t size)
 	HGOTO_ERROR(H5E_ARGS, H5E_CANTINIT, FAIL, "datatype is read-only")
     if(size <= 0 && size != H5T_VARIABLE)
 	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "size must be positive")
-    if(size == H5T_VARIABLE && dt->shared->type != H5T_STRING)
+    if(size == H5T_VARIABLE && !H5T_IS_STRING(dt->shared))
 	HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "only strings may be variable length")
     if(H5T_ENUM == dt->shared->type && dt->shared->u.enumer.nmembs > 0)
 	HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "operation not allowed after members are defined")