diff --git a/ediv/src/ediv/config.c b/ediv/src/ediv/config.c
index 88f9799..4d20e69 100644
--- a/ediv/src/ediv/config.c
+++ b/ediv/src/ediv/config.c
@@ -26,6 +26,7 @@
 #include "compiler.h"
 #include "lower.h"
 #include "language.h"
+#include "expresion.h"
 
 FILE *f;
 int i,tamano;