diff --git a/org/qmckl_sherman_morrison_woodbury.org b/org/qmckl_sherman_morrison_woodbury.org
index 92faf3a..598ad32 100644
--- a/org/qmckl_sherman_morrison_woodbury.org
+++ b/org/qmckl_sherman_morrison_woodbury.org
@@ -220,7 +220,7 @@ const double breakdown = 1e-3;
 const double tolerance = 1e-3;
 double res[441];
 
-#include "sm_tests.h"
+#include "sm_test.h"
 
 assert(Updates1 != NULL);
 assert(Updates_index1 != NULL);