diff --git a/Fonderie/Makefile b/Fonderie/Makefile
index 91fb45c..b2fe000 100644
--- a/Fonderie/Makefile
+++ b/Fonderie/Makefile
@@ -4,7 +4,7 @@
 #
 
 COPT = -g -fpic -no-pie -Wall -DDEBUG_LEVEL=0 -Werror=parentheses
-LIBS = ../libfloatimg.a -lpnglite -lm 
+LIBS = ../libfloatimg.a -lpnglite -lm -lz 
 
 OBJS = fonctions.o sfx.o crapulator.o glitches.o metriques.o	\
 	filterstack.o
@@ -17,7 +17,7 @@ all:	fonderie interpolator t
 # ---------------------------------------------------------
 
 t:	t.c Makefile ${OBJS}
-	gcc ${COPT} $< ${OBJS} ${LIBS} -lz -o $@
+	gcc ${COPT} $< ${OBJS} ${LIBS} -o $@
 
 # ---------------------------------------------------------
 
diff --git a/Fonderie/filterstack.c b/Fonderie/filterstack.c
index c932d72..483de0a 100644
--- a/Fonderie/filterstack.c
+++ b/Fonderie/filterstack.c
@@ -6,6 +6,7 @@
 #include  <stdlib.h>
 
 #include  "../floatimg.h"
+#include  "crapulator.h"
 #include  "filterstack.h"
 
 #undef  DEBUG_LEVEL