diff --git a/src/if_perl.xs b/src/if_perl.xs
index e1e6ada..9b8d2c2 100644
--- a/src/if_perl.xs
+++ b/src/if_perl.xs
@@ -611,7 +611,7 @@
     if (ptr->w_perl_private == NULL)
     {
 	ptr->w_perl_private = newSV(0);
-	sv_setiv(ptr->w_perl_private, (IV)ptr);
+	sv_setiv(ptr->w_perl_private, PTR2IV(ptr));
     }
     else
 	SvREFCNT_inc(ptr->w_perl_private);
@@ -629,7 +629,7 @@
     if (ptr->b_perl_private == NULL)
     {
 	ptr->b_perl_private = newSV(0);
-	sv_setiv(ptr->b_perl_private, (IV)ptr);
+	sv_setiv(ptr->b_perl_private, PTR2IV(ptr));
     }
     else
 	SvREFCNT_inc(ptr->b_perl_private);
diff --git a/src/typemap b/src/typemap
index 4004923..ca1600e 100644
--- a/src/typemap
+++ b/src/typemap
@@ -6,7 +6,7 @@
 T_VIOBJNOMUNGE
 	if (sv_isa($arg, \"${ntype}\")) {
 	    IV tmp = SvIV((SV*)SvRV($arg));
-	    $var = ($type) tmp;
+	    $var = INT2PTR($type, tmp);
 	    if (!tmp)
 		croak(\"$ntype no longer exists\");
 	}
diff --git a/src/version.c b/src/version.c
index bce741c..22a7998 100644
--- a/src/version.c
+++ b/src/version.c
@@ -715,6 +715,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    439,
+/**/
     438,
 /**/
     437,