diff --git a/u9fs.c b/u9fs.c
index 0b5273c..60e41ce 100644
--- a/u9fs.c
+++ b/u9fs.c
@@ -169,8 +169,18 @@ char isfrog[256]={
 	/*BKS*/	1, 1, 1, 1, 1, 1, 1, 1,
 	/*DLE*/	1, 1, 1, 1, 1, 1, 1, 1,
 	/*CAN*/	1, 1, 1, 1, 1, 1, 1, 1,
-	['/'] =	1,
-	[0x7f] =	1,
+	/*' '*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'('*/	0, 0, 0, 0, 0, 0, 0, 1,	/*'/'*/
+	/*'0'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'8'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'@'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'H'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'P'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'X'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'`'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'h'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'p'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'x'*/	0, 0, 0, 0, 0, 0, 0, 1,	/*DEL*/
 };
 
 char*