--- JSON-XS/XS.xs	2008/03/26 01:32:53	1.80
+++ JSON-XS/XS.xs	2008/03/26 01:40:43	1.81
@@ -1830,10 +1830,13 @@
 void incr_skip (JSON *self)
 	CODE:
 {
-        sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos);
-        self->incr_pos  = 0;
-        self->incr_nest = 0;
-        self->incr_mode = 0;
+        if (self->incr_pos)
+          {
+            sv_chop (self->incr_text, SvPV_nolen (self->incr_text) + self->incr_pos);
+            self->incr_pos  = 0;
+            self->incr_nest = 0;
+            self->incr_mode = 0;
+          }
 }
 
 void DESTROY (JSON *self)