diff --git a/emul/forth/z80c.bin b/emul/forth/z80c.bin
index 0e6fbf1..6c75407 100644
Binary files a/emul/forth/z80c.bin and b/emul/forth/z80c.bin differ
diff --git a/forth/forth.asm b/forth/forth.asm
index 26ffeba..4feaf28 100644
--- a/forth/forth.asm
+++ b/forth/forth.asm
@@ -830,27 +830,10 @@ CIN:
 	.dw	EXIT
 
 
-; ( c -- f )
-; 33 CMP 1 + NOT
-; The NOT is to normalize the negative/positive numbers to 1 or 0.
-; Hadn't we wanted to normalize, we'd have written:
-; 32 CMP 1 -
-	.db	"WS?"
-	.dw	$-CIN
-	.db	3
-ISWS:
-	.dw	compiledWord
-	.dw	NUMBER
-	.dw	33
-	.dw	CMP
-	.dw	NUMBER
-	.dw	1
-	.dw	PLUS
-	.dw	NOT
-	.dw	EXIT
+.fill 24
 
 	.db	"NOT"
-	.dw	$-ISWS
+	.dw	$-CIN
 	.db	3
 NOT:
 	.dw	nativeWord
diff --git a/forth/icore.fs b/forth/icore.fs
index e0067bd..ea4ef4b 100644
--- a/forth/icore.fs
+++ b/forth/icore.fs
@@ -78,9 +78,14 @@
     HERE @ 1 + HERE !
 ;
 
+( The NOT is to normalize the negative/positive numbers to 1
+  or 0. Hadn't we wanted to normalize, we'd have written:
+  32 CMP 1 - )
+: WS? 33 CMP 1 + NOT ;
+
 : TOWORD
     BEGIN
-    C< DUP WS? NOT IF EXIT THEN DROP
+    C< DUP _c WS? NOT IF EXIT THEN DROP
     AGAIN
 ;
 
@@ -96,7 +101,7 @@
         OVER !                  ( a )
         1 +                     ( a+1 )
         C<                      ( a c )
-        DUP WS?
+        DUP _c WS?
     UNTIL
     ( a this point, PS is: a WS )
     ( null-termination is already written )