diff --git a/src/lib/gen/strdup.c b/src/lib/gen/strdup.c
index f877d047..c1d16b36 100644
--- a/src/lib/gen/strdup.c
+++ b/src/lib/gen/strdup.c
@@ -33,7 +33,7 @@
 
 /* for systems without strdup() define NOSTRDUP */
 
-#include "gen.h"
+#include "prototypes.h"
 #ifdef NOSTRDUP
 
 char *