diff --git a/qa/drc_proto/drc_rule.cpp b/qa/drc_proto/drc_rule.cpp
index 7981c918c2..307f9e3ab0 100644
--- a/qa/drc_proto/drc_rule.cpp
+++ b/qa/drc_proto/drc_rule.cpp
@@ -71,8 +71,10 @@ bool test::DRC_RULE_CONDITION::Compile()
 
     if (!m_ucode)
         m_ucode = new PCB_EXPR_UCODE;
+
+    LIBEVAL::CONTEXT preflightContext;
     
-    bool ok = compiler.Compile( m_Expression.ToUTF8().data(), m_ucode );
+    bool ok = compiler.Compile( m_Expression.ToUTF8().data(), m_ucode, &preflightContext );
 
     if( ok )
         return true;