diff --git a/src/maths/sparse/spSMP.c b/src/maths/sparse/spSMP.c
index 4b05fdc61..0d4a4e1b5 100644
--- a/src/maths/sparse/spSMP.c
+++ b/src/maths/sparse/spSMP.c
@@ -194,7 +194,7 @@ SMPreorder(
 SMPmatrix *Matrix,
 double PivTol, double PivRel, double Gmin)
 {
-    spSetComplex( Matrix );
+    spSetReal( Matrix );
     LoadGmin( Matrix, Gmin );
     return spOrderAndFactor( Matrix, (spREAL*)NULL,
                              (spREAL)PivRel, (spREAL)PivTol, YES );