diff --git a/encoding.c b/encoding.c
index 6483322..da063e2 100644
--- a/encoding.c
+++ b/encoding.c
@@ -2335,7 +2335,7 @@
     unsigned int c;
 
     if ((out == NULL) || (outlen == NULL) || (inlen == NULL) ||
-        (in == NULL) || (xlattable == NULL))
+        (in == NULL) || (unicodetable == NULL))
 	return(-1);
     outend = out + *outlen;
     inend = in + *inlen;