--- Compress-LZF/LZF.xs	2001/09/27 20:08:05	1.5
+++ Compress-LZF/LZF.xs	2001/09/27 20:09:02	1.6
@@ -267,10 +267,7 @@
         PROTOTYPE: $
         PPCODE:
 
-        if (!SvPOK (sv))
-          croak ("Compress::LZF::sthaw(): argument must be a string");
-
-        if (IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI))
+        if (SvPOK (sv) && IN_RANGE (SvPV_nolen (sv)[0], MAGIC_LO, MAGIC_HI))
           {
             switch (SvPVX (sv)[0])
               {