--- JSON-XS/XS.xs	2016/02/26 21:46:45	1.127
+++ JSON-XS/XS.xs	2016/10/07 05:18:48	1.128
@@ -320,7 +320,6 @@
           return 1;
         else if (*pv == '0')
           return 0;
-
     }
 
   return -1;
@@ -335,11 +334,14 @@
 
   scalar = SvRV (scalar);
 
-  if (SvSTASH (scalar) == bool_stash)
-    return 1;
+  if (SvTYPE (scalar) >= SVt_PVMG)
+    {
+      if (SvSTASH (scalar) == bool_stash)
+        return 1;
 
-  if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
-    return 1;
+      if (!SvOBJECT (scalar) && ref_bool_type (scalar) >= 0)
+        return 1;
+    }
 
   return 0;
 }