diff --git a/build_scripts/qt/sources.pri b/build_scripts/qt/sources.pri
index c2b247b..9f861f6 100644
--- a/build_scripts/qt/sources.pri
+++ b/build_scripts/qt/sources.pri
@@ -52,7 +52,7 @@ win32 {
     #easylogging++ used to be a header only lib. Now requires easylogging++.cc
     SOURCES += third-party/easylogging++/easylogging++.cc
 } else {
-    QMAKE_CXXFLAGS += -isystem third-party/openvr/headers
-    QMAKE_CXXFLAGS += -isystem third-party/easylogging++
+    QMAKE_CXXFLAGS += -isystem ../third-party/openvr/headers
+    QMAKE_CXXFLAGS += -isystem ../third-party/easylogging++
     SOURCES += third-party/easylogging++/easylogging++.cc
 }