diff --git a/org/qmckl_sherman_morrison_woodbury.org b/org/qmckl_sherman_morrison_woodbury.org
index 769a1b9..54b8b98 100644
--- a/org/qmckl_sherman_morrison_woodbury.org
+++ b/org/qmckl_sherman_morrison_woodbury.org
@@ -1006,14 +1006,16 @@ qmckl_exit_code qmckl_sherman_morrison_splitting(const qmckl_context context,
   uint64_t later_index[N_updates];
   uint64_t later = 0;
 
-  (void) qmckl_slagel_splitting(
-      LDS, Dim, N_updates, Updates, Updates_index, breakdown, Slater_inv,
-      later_updates, later_index, &later, determinant);
+  qmckl_exit_code rc = qmckl_slagel_splitting(
+    LDS, Dim, N_updates, Updates, Updates_index, breakdown, Slater_inv,
+    later_updates, later_index, &later, determinant);
+  if (rc != QMCKL_SUCCESS) return QMCKL_FAILURE;
 
   if (later > 0) {
-      (void) qmckl_sherman_morrison_splitting(
-          context, LDS, Dim, later, later_updates, later_index, breakdown,
-          Slater_inv, determinant);
+    qmckl_exit_code rc = qmckl_sherman_morrison_splitting(
+      context, LDS, Dim, later, later_updates, later_index, breakdown,
+      Slater_inv, determinant);
+    if (rc != QMCKL_SUCCESS) return QMCKL_FAILURE;
   }
 
   return QMCKL_SUCCESS;
@@ -1251,17 +1253,19 @@ qmckl_exit_code qmckl_sherman_morrison_smw32s(const qmckl_context context,
     const double* Updates_1block = &Updates[n_of_3blocks * length_3block];
     const uint64_t* Updates_index_1block = &Updates_index[3 * n_of_3blocks];
     uint64_t l = 0;
-    (void) qmckl_slagel_splitting(
+    qmckl_exit_code rc = qmckl_slagel_splitting(
                           LDS, Dim, 1, Updates_1block, Updates_index_1block, breakdown,
                           Slater_inv, later_updates + (LDS * later), later_index + later, &l,
                           determinant);
+    if (rc != QMCKL_SUCCESS) return QMCKL_FAILURE;
     later += l;
   }
 
   if (later > 0) {
-    (void) qmckl_sherman_morrison_splitting(
+    qmckl_exit_code rc = qmckl_sherman_morrison_splitting(
                           context, LDS, Dim, later, later_updates, later_index, breakdown,
                           Slater_inv, determinant);
+    if (rc != QMCKL_SUCCESS) return QMCKL_FAILURE;
   }
 
   return QMCKL_SUCCESS;