Index: /trunk/ippTools/src/difftool.c
===================================================================
--- /trunk/ippTools/src/difftool.c	(revision 24058)
+++ /trunk/ippTools/src/difftool.c	(revision 24059)
@@ -1326,5 +1326,5 @@
         psStringAppend(&whereClause, "\n%s (diffRun.diff_id IS NULL", whereClause ? "AND" : "WHERE");
         if (label) {
-            psStringAppend(&whereClause, " OR diffRun.label != %s", label);
+            psStringAppend(&whereClause, " OR diffRun.label != '%s'", label);
         }
         psStringAppend(&whereClause, ")");