diff --git a/Makefile b/Makefile
index 5b7545a..4807efe 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,5 @@
-#CFLAGS= -Wall -O3 -ffast-math -std=gnu99
-
 CC = gcc
-CFLAGS= -Wall -O2 -std=gnu99
+CFLAGS= -Wall -O3 -ffast-math -std=gnu99
 LDFLAGS = -L/usr/lib
 LIBS = -lusb-1.0 -lrtlsdr -lpthread -lfftw3f -lcurl -lm
 
diff --git a/rtlsdr_wsprd.c b/rtlsdr_wsprd.c
index 65acbae..e37381d 100644
--- a/rtlsdr_wsprd.c
+++ b/rtlsdr_wsprd.c
@@ -165,7 +165,7 @@ static void rtlsdr_callback(unsigned char *samples, uint32_t samples_count, void
 
         /* Decimation R=6400 */
         decimationIndex++;
-        if (decimationIndex <= DOWNSAMPLING) {  // FIXME check !!!
+        if (decimationIndex <= DOWNSAMPLING) {
             continue;
         }