diff --git a/skeletons/constr_SET.c b/skeletons/constr_SET.c
index 1fcbc2e..83488d9 100644
--- a/skeletons/constr_SET.c
+++ b/skeletons/constr_SET.c
@@ -675,11 +675,12 @@
 		 */
 		ch_size = xer_next_token(&ctx->context,
 			buf_ptr, size, &ch_type);
-		switch(ch_size) {
-		case -1: RETURN(RC_FAIL);
-		case 0:  RETURN(RC_WMORE);
-		default:
+		if(ch_size == -1) {
+            RETURN(RC_FAIL);
+        } else {
 			switch(ch_type) {
+            case PXER_WMORE:
+                RETURN(RC_WMORE);
 			case PXER_COMMENT:	/* Got XML comment */
 			case PXER_TEXT:		/* Ignore free-standing text */
 				XER_ADVANCE(ch_size);	/* Skip silently */