diff --git a/lib/preprocessor.cpp b/lib/preprocessor.cpp
index 1b1870d30..3c6ae34eb 100644
--- a/lib/preprocessor.cpp
+++ b/lib/preprocessor.cpp
@@ -1797,6 +1797,12 @@ Preprocessor::HeaderTypes Preprocessor::getHeaderFileName(std::string &str)
  */
 static bool openHeader(std::string &filename, const std::list<std::string> &includePaths, const std::string &filePath, std::ifstream &fin)
 {
+    fin.open((filePath + filename).c_str());
+    if (fin.is_open()) {
+        filename = filePath + filename;
+        return true;
+    }
+
     std::list<std::string> includePaths2(includePaths);
     includePaths2.push_front("");
 
@@ -1810,12 +1816,6 @@ static bool openHeader(std::string &filename, const std::list<std::string> &incl
         fin.clear();
     }
 
-    fin.open((filePath + filename).c_str());
-    if (fin.is_open()) {
-        filename = filePath + filename;
-        return true;
-    }
-
     return false;
 }