diff --git a/Makefile b/Makefile
index 829e3a9..8918bf0 100644
--- a/Makefile
+++ b/Makefile
@@ -44,7 +44,7 @@ endif
 ##############################################################################
 CFLAGS += $(OPT)
 TARGET  = MUSIC
-OBJS    = output.o transfer_function.o Numerics.o \
+OBJS    = output.o transfer_function.o Numerics.o defaults.o\
 		convolution_kernel.o densities.o cosmology.o poisson.o log.o main.o \
 		$(patsubst plugins/%.cc,plugins/%.o,$(wildcard plugins/*.cc))
 
diff --git a/log.hh b/log.hh
index dfd78ee..16c7cc3 100644
--- a/log.hh
+++ b/log.hh
@@ -28,6 +28,7 @@
 #include <list>
 #include <fstream>
 #include <ctime>
+#include <cstdarg>
 #include <sstream>
 
 /*!