1 files changed, 1 insertions, 1 deletions
diff --git a/proto.h b/proto.h
index 4465055a5d..e0d2fc4beb 100644
--- a/proto.h
+++ b/proto.h
@@ -2958,7 +2958,7 @@ STATIC HV*	S_require_tie_mod(pTHX_ GV *gv, const char *varpv, SV* namesv, const
 
 #endif
 
-PERL_CALLCONV void*	Perl_get_arena(pTHX_ int svtype)
+PERL_CALLCONV void*	Perl_get_arena(pTHX_ size_t svtype)
 			__attribute__malloc__
 			__attribute__warn_unused_result__;