diff --git a/funcs/filtrage.c b/funcs/filtrage.c
index bb2f1ada..b342e645 100644
--- a/funcs/filtrage.c
+++ b/funcs/filtrage.c
@@ -4,7 +4,7 @@
 #include  <fcntl.h>
 #include  <float.h>
 
-#include  "floatimg.h"
+#include  "../floatimg.h"
 
 /* -------------------------------------------------------------------- */
 int fimg_lissage_2x2(FloatImg *img)