Index: xs/Apache2/RequestIO/Apache2__RequestIO.h
===================================================================
--- xs/Apache2/RequestIO/Apache2__RequestIO.h	(revision 384080)
+++ xs/Apache2/RequestIO/Apache2__RequestIO.h	(working copy)
@@ -240,7 +240,7 @@
     }
 
     if (len <= 0) {
-        Perl_croak(aTHX_ "The LENGTH argument can't be negative");
+        Perl_croak(aTHX_ "The LENGTH argument can't be negative or zero");
     }
 
     /* XXX: need to handle negative offset */