diff --git a/tgt-pcb/fp.y b/tgt-pcb/fp.y
index a4bcfc703..d300def61 100644
--- a/tgt-pcb/fp.y
+++ b/tgt-pcb/fp.y
@@ -27,6 +27,9 @@
 
 # include  "fp_api.h"
 # include  "pcb_priv.h"
+# include  <cstdio>
+# include  <cstdarg>
+
 
 using namespace std;