diff --git a/libgo/runtime/print.c b/libgo/runtime/print.c
index 3eafeb7fe16..c24304e2487 100644
--- a/libgo/runtime/print.c
+++ b/libgo/runtime/print.c
@@ -136,7 +136,7 @@ void
 runtime_printpc(void *p __attribute__ ((unused)))
 {
 	runtime_prints("PC=");
-	runtime_printhex((uint64)runtime_getcallerpc(p));
+	runtime_printhex((uint64)(uintptr)runtime_getcallerpc(p));
 }
 
 void