diff --git a/src/DvmhRegions/DvmhRegionInserter.cpp b/src/DvmhRegions/DvmhRegionInserter.cpp
index 71c872d..002f40b 100644
--- a/src/DvmhRegions/DvmhRegionInserter.cpp
+++ b/src/DvmhRegions/DvmhRegionInserter.cpp
@@ -1297,7 +1297,10 @@ static set<DIST::Array*>
                 {
                     declStat = SgStatement::getStatementByFileAndLine(decl.first, decl.second);
                     if (declStat == NULL) // check in inlcudes 
-                    {                        
+                    {
+                        if (!main->switchToFile())
+                            printInternalError(convertFileName(__FILE__).c_str(), __LINE__);
+
                         for (auto st = main; st != main->lastNodeOfStmt() && !declStat; st = st->lexNext())
                         {
                             if (st->fileName() == decl.first && st->lineNumber() == decl.second)