diff --git a/sw/ground_segment/lpc21iap/Makefile b/sw/ground_segment/lpc21iap/Makefile
index dc4a954a37..f9b7ab4716 100644
--- a/sw/ground_segment/lpc21iap/Makefile
+++ b/sw/ground_segment/lpc21iap/Makefile
@@ -27,8 +27,8 @@ endif
 
 UNAME = $(shell uname -s)
 ifeq ("$(UNAME)","Darwin")
-  LIBRARYS = -L /opt/paparazzi/lib -L /opt/local/lib
-  INCLUDES = -I /opt/paparazzi/include -I /opt/local/include/
+  LIBRARYS = -L/opt/paparazzi/lib -L/opt/local/lib
+  INCLUDES = -I/opt/paparazzi/include -I/opt/local/include/
 endif
 
 
diff --git a/sw/lib/ocaml/ivy/Makefile b/sw/lib/ocaml/ivy/Makefile
index 574935c6d6..6a1a7cb70d 100644
--- a/sw/lib/ocaml/ivy/Makefile
+++ b/sw/lib/ocaml/ivy/Makefile
@@ -52,8 +52,8 @@ UNAME = $(shell uname -s)
 UNAME = $(shell uname -s)
 
 ifeq ("$(UNAME)","Darwin")
-  LIBRARYS = -L /opt/paparazzi/lib -L /opt/local/lib
-  INCLUDES = -I /opt/paparazzi/include -I /opt/local/include/
+  LIBRARYS = -L/opt/paparazzi/lib -L/opt/local/lib
+  INCLUDES = -I/opt/paparazzi/include -I/opt/local/include/
 endif
 
 LIBS = ivy-ocaml.cma ivy-ocaml.cmxa glibivy-ocaml.cma glibivy-ocaml.cmxa
diff --git a/sw/simulator/old_booz/tests/Makefile b/sw/simulator/old_booz/tests/Makefile
index 13d0e57905..fb4c9cc232 100644
--- a/sw/simulator/old_booz/tests/Makefile
+++ b/sw/simulator/old_booz/tests/Makefile
@@ -4,10 +4,10 @@
 #JSBSIM = /usr/local
 
 #CC = g++
-#CFLAGS  = -Wall -I $(JSBSIM)/include/JSBSim -I../include
-#LDFLAGS = -L $(JSBSIM)/lib -lJSBSim
-#CFLAGS  += -I /usr/include/meschach -I /usr/local/include/
-#LDFLAGS += -lmeschach -L /usr/lib
+#CFLAGS  = -Wall -I$(JSBSIM)/include/JSBSim -I../include
+#LDFLAGS = -L$(JSBSIM)/lib -lJSBSim
+#CFLAGS  += -I/usr/include/meschach -I/usr/local/include/
+#LDFLAGS += -lmeschach -L/usr/lib
 #CFLAGS  += `pkg-config glib-2.0 --cflags`
 #LDFLAGS += `pkg-config glib-2.0 --libs` -lm -lglibivy -lpcre