diff --git a/src/core/org/luaj/vm2/lib/IoLib.java b/src/core/org/luaj/vm2/lib/IoLib.java
index 86f40ad5..a9d49973 100644
--- a/src/core/org/luaj/vm2/lib/IoLib.java
+++ b/src/core/org/luaj/vm2/lib/IoLib.java
@@ -467,7 +467,7 @@ public class IoLib extends TwoArgFunction {
 		return LuaValue.TRUE;
 	}
 
-	private static Varargs errorresult(Exception ioe) {
+	static Varargs errorresult(Exception ioe) {
 		String s = ioe.getMessage();		
 		return errorresult("io error: "+(s!=null? s: ioe.toString()));
 	}