diff --git a/Makefile b/Makefile
index 2998996..94e4600 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,6 @@ CFLAGS=
 
 all: publisher client logger
 
-
 publisher: src/publisher.c
 	$(CC) -lzmq $^ -o $@
 
diff --git a/src/logger.c b/src/logger.c
index 6776141..39f1b5c 100644
--- a/src/logger.c
+++ b/src/logger.c
@@ -17,7 +17,7 @@ void start(char *power_path, char *busid, char *chipaddr);
 int main (int argc, char *argv [])
 {
   if(argc != 3){
-    printf("Usage: %s <client> <frequency>",argv[0]);
+    printf("Usage: %s <logdir> <client> <logfrequency>",argv[0]);
     exit(1);
   }