2 files changed, 2 insertions, 2 deletions
diff --git a/sv.c b/sv.c
index 5c464609a4..cd40d7737d 100644
--- a/sv.c
+++ b/sv.c
@@ -12266,7 +12266,7 @@ perl_clone_using(PerlInterpreter *proto_perl, UV flags,
     PL_parser = NULL;
     Zero(&PL_debug_pad, 1, struct perl_debug_pad);
 #  ifdef DEBUG_LEAKING_SCALARS
-    PL_sv_serial = (((U32)my_perl >> 2) & 0xfff) * 1000000;
+    PL_sv_serial = (((UV)my_perl >> 2) & 0xfff) * 1000000;
 #  endif
 #else	/* !DEBUGGING */
     Zero(my_perl, 1, PerlInterpreter);
diff --git a/sv.h b/sv.h
index 5819ee42f5..a96c6f57b6 100644
--- a/sv.h
+++ b/sv.h
@@ -117,7 +117,7 @@ struct STRUCT_SV {		/* struct sv { */
     PERL_BITFIELD32 sv_debug_optype:9;	/* the type of OP that allocated us */
     PERL_BITFIELD32 sv_debug_inpad:1;	/* was allocated in a pad for an OP */
     PERL_BITFIELD32 sv_debug_line:16;	/* the line where we were allocated */
-    U32		    sv_debug_serial;	/* serial number of sv allocation   */
+    UV		    sv_debug_serial;	/* serial number of sv allocation   */
     char *	    sv_debug_file;	/* the file where we were allocated */
     SV *	    sv_debug_parent;	/* what we were cloned from (ithreads)*/
 #endif