--- a/pp/opp_symbol.cpp
+++ b/pp/opp_symbol.cpp
@@ -19,7 +19,7 @@
 #include <sstream>
 #include <iomanip>
 
-#include "../util/file_manip.h"
+#include "file_manip.h"
 
 #include "opp_symbol.h"
 #include "opf_filter.h"