diff --git a/lib/qcd/QCD.h b/lib/qcd/QCD.h
index fc95490a..74107a3e 100644
--- a/lib/qcd/QCD.h
+++ b/lib/qcd/QCD.h
@@ -45,7 +45,7 @@ namespace QCD {
     static const int Zm = 6;
     static const int Tm = 7;
 
-    static const int Nc=2;
+    static const int Nc=3;
     static const int Ns=4;
     static const int Nd=4;
     static const int Nhs=2; // half spinor