diff --git a/opm/core/linalg/call_umfpack.c b/opm/core/linalg/call_umfpack.c
index 829000935..9f721141e 100644
--- a/opm/core/linalg/call_umfpack.c
+++ b/opm/core/linalg/call_umfpack.c
@@ -42,6 +42,11 @@
 #include <opm/core/linalg/sparse_sys.h>
 #include <opm/core/linalg/call_umfpack.h>
 
+/* To handle new versions of SuiteSparse. */
+#ifndef UF_long
+#define UF_long SuiteSparse_long
+#endif
+
 struct CSCMatrix {
     UF_long  n;
     UF_long  nnz;