diff --git a/melgmix.h b/melgmix.h
index 58e06e5f73e6a139490466ef8e7cf2297e229e5a..357eaae72e1e6fcff3734272572f23fe1b21ed2a 100644
--- a/melgmix.h
+++ b/melgmix.h
@@ -157,8 +157,8 @@ namespace Melodic{
       double datastdev;
 
     private:
-      MelodicOptions &opts;     
-      Log &logger; //global log file
+      __attribute__((unused)) MelodicOptions &opts;     
+      __attribute__((unused)) Log &logger; //global log file
 
       //Log mainhtml;
 
diff --git a/melpca.h b/melpca.h
index ee786a306141d27e89dcbed8b58f78519ea85264..346e9a5ba4d24aac6652b895b2d12a12b22f0b10 100644
--- a/melpca.h
+++ b/melpca.h
@@ -46,7 +46,7 @@ namespace Melodic{
       MelodicData &melodat;
       MelodicOptions &opts;
       Log &logger;
-      MelodicReport &report;
+      __attribute__((unused)) MelodicReport &report;
 
       int pcadim();
   };