diff --git a/cachegrind/cg_main.c b/cachegrind/cg_main.c
index f795dc4..9832605 100644
--- a/cachegrind/cg_main.c
+++ b/cachegrind/cg_main.c
@@ -486,7 +486,7 @@
                             TempReg, t_data_addr1,
                             TempReg, t_data_addr2);
    else
-      VG_(skin_panic)("argc... not 1 or 2 or 3?");
+      VG_(tool_panic)("argc... not 1 or 2 or 3?");
 
    uCCall(cb, helper, argc, argc, False);
 }