diff --git a/src/create_rcsim_h.sh b/src/create_rcsim_h.sh
index 177b79dd5..331ab072c 100755
--- a/src/create_rcsim_h.sh
+++ b/src/create_rcsim_h.sh
@@ -51,8 +51,8 @@ enum {	// not defined in input.h but used like that, at least in 2.4.22
 };
 
 struct key{
-	char *name;
-	unsigned long code;
+	const char *name;
+	const unsigned long code;
 };
 
 static const struct key keyname[] = {