diff --git a/include/dynamic-graph/signal-cast-helper.h b/include/dynamic-graph/signal-cast-helper.h
index 790d5b81e75f0e465973655519d77901678254a6..8b4637548add715c2cafb3ad012b84eddf66e6c4 100644
--- a/include/dynamic-graph/signal-cast-helper.h
+++ b/include/dynamic-graph/signal-cast-helper.h
@@ -30,6 +30,7 @@
 
 # include <dynamic-graph/dynamic-graph-api.h>
 # include "dynamic-graph/exception-signal.h"
+# include "dynamic-graph/signal-caster.h"
 
 namespace dynamicgraph
 {