--- a/liboctave/mx-defs.h
+++ b/liboctave/mx-defs.h
@@ -27,29 +27,43 @@
 // Classes we declare.
 
 class Matrix;
+class ComplexMatrix;
+class charMatrix;
+
 class ColumnVector;
+class ComplexColumnVector;
+
 class RowVector;
+class ComplexRowVector;
+
 class DiagMatrix;
-class ComplexMatrix;
-class ComplexColumnVector;
-class ComplexRowVector;
 class ComplexDiagMatrix;
+
 class AEPBALANCE;
 class ComplexAEPBALANCE;
+
 class GEPBALANCE;
+
 class CHOL;
 class ComplexCHOL;
+
 class DET;
 class ComplexDET;
+
 class EIG;
+
 class HESS;
 class ComplexHESS;
+
 class SCHUR;
 class ComplexSCHUR;
+
 class SVD;
 class ComplexSVD;
+
 class LU;
 class ComplexLU;
+
 class QR;
 class ComplexQR;