diff --git a/loc-bts/code/ap/Makefile b/loc-bts/code/ap/Makefile
index 46b5a6f..283bde6 100644
--- a/loc-bts/code/ap/Makefile
+++ b/loc-bts/code/ap/Makefile
@@ -17,7 +17,7 @@ TARGET=apd
 HEADER=ap.h
 
 # Flags
-CFLAGS=-O2 -W -Wall -Wstrict-prototypes -I.
+CFLAGS=-O2 -W -Wall -Wstrict-prototypes -O -I.
 DEPFLAGS=-MMD
 XCFLAGS=$(CFLAGS) $(DEPFLAGS) $(WARN) $(HEADERS)
 PICFLAG=-fPIC
diff --git a/loc-bts/code/client/Makefile b/loc-bts/code/client/Makefile
index 75d6392..c54798e 100644
--- a/loc-bts/code/client/Makefile
+++ b/loc-bts/code/client/Makefile
@@ -17,7 +17,7 @@ TARGET=locclient
 HEADER=
 
 # Flags
-CFLAGS=-O2 -W -Wall -Wstrict-prototypes -I.
+CFLAGS=-O2 -W -Wall -Wstrict-prototypes -O -I.
 DEPFLAGS=-MMD
 XCFLAGS=$(CFLAGS) $(DEPFLAGS) $(WARN) $(HEADERS)
 PICFLAG=-fPIC
diff --git a/loc-bts/code/librtaputil/Makefile b/loc-bts/code/librtaputil/Makefile
index aa9514d..a4168d4 100644
--- a/loc-bts/code/librtaputil/Makefile
+++ b/loc-bts/code/librtaputil/Makefile
@@ -1,6 +1,5 @@
 # Répertoire d'installation
 PREFIX=/usr/local
-INSTALL_DIR= $(PREFIX)/sbin
 INSTALL_LIB= $(PREFIX)/lib
 INSTALL_INC= $(PREFIX)/include
 INSTALL_MAN= $(PREFIX)/share/man
@@ -31,7 +30,7 @@ HEADER=rtaputil.h
 OBJS=$(LIB_CIBLE).o
 
 # Flags
-CFLAGS=-O2 -W -Wall -Wstrict-prototypes -I.
+CFLAGS=-O2 -W -Wall -Wstrict-prototypes -O -I.
 DEPFLAGS=-MMD
 XCFLAGS=$(CFLAGS) $(DEPFLAGS) $(WARN) $(HEADERS)
 PICFLAG=-fPIC
diff --git a/loc-bts/code/librtaputil/librtaputil.c b/loc-bts/code/librtaputil/librtaputil.c
index 2603446..85e9b04 100644
--- a/loc-bts/code/librtaputil/librtaputil.c
+++ b/loc-bts/code/librtaputil/librtaputil.c
@@ -122,7 +122,6 @@ BOOL mac_cmp(unsigned char *mac1, unsigned char *mac2)
 int create_udp_sending_socket(char *server_address, int server_port, struct sockaddr_in *server_description, struct sockaddr_in * client_description)
 {
   int sockfd ; // Descripteur de la socket
-  int ret = 0 ; // Valeur de retour
 
   /* Ceation de la socket UDP */
   sockfd = socket(AF_INET, SOCK_DGRAM, 0) ;
diff --git a/loc-bts/code/rtapaggregate/Makefile b/loc-bts/code/rtapaggregate/Makefile
index 92fe491..3bb4468 100644
--- a/loc-bts/code/rtapaggregate/Makefile
+++ b/loc-bts/code/rtapaggregate/Makefile
@@ -17,7 +17,7 @@ TARGET=rtapaggregated
 HEADER=rtapaggregate.h
 
 # Flags
-CFLAGS=-O2 -W -Wall -Wstrict-prototypes -I.
+CFLAGS=-O2 -W -Wall -Wstrict-prototypes -O -I.
 DEPFLAGS=-MMD
 XCFLAGS=$(CFLAGS) $(DEPFLAGS) $(WARN) $(HEADERS)
 PICFLAG=-fPIC