diff --git a/FindRef.xs b/FindRef.xs

index ac4c991..662559f 100644

--- a/FindRef.xs

+++ b/FindRef.xs

@@ -47,7 +47,7 @@

 #define res_gv(sigil)						\

   res_text (form ("the global %c%s::%.*s", sigil,		\

                   HvNAME (GvSTASH (sv)),			\

-                  GvNAME_HEK (sv) ? GvNAMELEN (sv) : 11,	\

+                  GvNAME_HEK (sv) ? (int) GvNAMELEN (sv) : 11,	\

                   GvNAME_HEK (sv) ? GvNAME    (sv) : "<anonymous>"))

 MODULE = Devel::FindRef		PACKAGE = Devel::FindRef		

@@ -151,7 +151,7 @@ find_ (SV *target_ref)

                                 while ((he = hv_iternext ((HV *)sv)))

                                   if (HeVAL (he) == targ)

-                                    res_pair (form ("the hash member '%.*s' of", HeKLEN (he), HeKEY (he)));

+                                    res_pair (form ("the hash member '%.*s' of", (int) HeKLEN (he), HeKEY (he)));

                               }

                             break;

@@ -207,7 +207,7 @@ find_ (SV *target_ref)

                                     && CopLINE ((COP *)CvSTART (sv)))

                                   res_text (form ("the closure created at %s:%d",

                                                   CopFILE ((COP *)CvSTART (sv)) ? CopFILE ((COP *)CvSTART (sv)) : "<unknown>",

-                                                  CopLINE ((COP *)CvSTART (sv))));

+                                                  (int) CopLINE ((COP *)CvSTART (sv))));

                                 else

                                   res_text (form ("the closure created somewhere in file %s (PLEASE REPORT!)",

                                                   CvFILE (sv) ? CvFILE (sv) : "<unknown>"));

@@ -237,10 +237,10 @@ find_ (SV *target_ref)

                                       res_pair (form ("the target for the lvalue hash element '%.*s',",

                                                       (int)SvCUR (mg->mg_obj), SvPV_nolen (mg->mg_obj)));

                                     else

-                                      res_pair (form ("the target for the lvalue array element #%d,", LvTARGOFF (sv)));

+                                      res_pair (form ("the target for the lvalue array element #%zu,", LvTARGOFF (sv)));

                                   }

                                 else

-                                  res_pair (form ("an lvalue reference target (type '%c', ofs %d, len %d),",

+                                  res_pair (form ("an lvalue reference target (type '%c', ofs %zu, len %zu),",

                                                   LvTYPE (sv), LvTARGOFF (sv), LvTARGLEN (sv)));

                               }