diff --git a/include/utils/p2c.h b/include/utils/p2c.h
index 6f60d5c9331d0169e09342f293f5343cc2917532..8d9e80a6ceb74c9c3124a65d515886d15e045469 100644
--- a/include/utils/p2c.h
+++ b/include/utils/p2c.h
@@ -110,7 +110,7 @@ long    *P_addsetr    (long *, unsigned, unsigned) DEPRECATED;
 long    *P_remset     (long *, unsigned) DEPRECATED;
 long    *P_expset     (long *, long) DEPRECATED;
 
-char *GetChipmunkPath();
+char *GetChipmunkPath(char *ev, char *deft);
 
 /* I/O error handling */
 #define _SETIO(cond,ior)          (P_ioresult = (cond) ? 0 : (ior))