diff --git a/CmakeLists.txt b/CmakeLists.txt
index ecec329..222618c 100644
--- a/CmakeLists.txt
+++ b/CmakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.3)
 
 project(TowerOptoSifAndSpectral)
 set(CMAKE_AUTOMOC ON)
@@ -6,9 +6,7 @@ set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTORCC ON)
 set(QT Core Network WebSockets SerialPort Widgets)
 set(CMAKE_CXX_STANDARD 14)
-IF (WIN32)
-set(CMAKE_PREFIX_PATH "C:\\Qt\\Qt5.12.7\\5.12.7\\mingw73_64")
-ENDIF ()
+
 find_package(Qt5 REQUIRED ${QT})