diff --git a/sw/airborne/test/ahrs/Makefile b/sw/airborne/test/ahrs/Makefile
index 2cde23ddab..35d01ecc24 100644
--- a/sw/airborne/test/ahrs/Makefile
+++ b/sw/airborne/test/ahrs/Makefile
@@ -131,7 +131,7 @@ run_ahrs_on_synth: run_ahrs_on_synth.c $(RAOS_SRCS) $(AHRS_SRCS)
 	$(Q) $(CC) $(CFLAGS) $(AHRS_CFLAGS) -o $@ $^ $(LDFLAGS) 
 
 IVY_CFLAGS=-g -O2 -Wall `pkg-config glib-2.0 --cflags`
-IVY_LDFLAGS=`pkg-config glib-2.0 --libs` `pcre-config --libs` -lglibivy
+IVY_LDFLAGS=`pkg-config glib-2.0 --libs` -lglibivy
 
 run_ahrs_on_synth_ivy: run_ahrs_on_synth_ivy.c $(RAOS_SRCS) $(AHRS_SRCS)
 	$(CC) $(CFLAGS) $(AHRS_CFLAGS) $(IVY_CFLAGS) -o $@ $^ $(LDFLAGS) $(IVY_LDFLAGS)
diff --git a/sw/simulator/old_booz/tests/Makefile b/sw/simulator/old_booz/tests/Makefile
index 626e8076d2..35c5ec7f91 100644
--- a/sw/simulator/old_booz/tests/Makefile
+++ b/sw/simulator/old_booz/tests/Makefile
@@ -9,7 +9,7 @@
 #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 -lpcre -lglibivy
+#LDFLAGS += `pkg-config glib-2.0 --libs` -lm -lglibivy -lpcre
 
 #test1: nps_test1.c nps_jsbsim.c
 #	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
@@ -28,13 +28,10 @@ CFLAGS = -Wall                          \
          -I ../../../var/BOOZ2_A1       \
          -I ../../airborne              \
          -I ../../include               \
-         -I /usr/include/meschach       \
 	 -I $(JSBSIM)/include/JSBSim    \
          `pkg-config glib-2.0 --cflags` \
 
 LDFLAGS = -lm                           \
-          -lmeschach                    \
-          -lpcre                        \
           -lglibivy                     \
 	  -L $(JSBSIM)/lib -lJSBSim	\
           `pkg-config glib-2.0 --libs`  \