diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7d050f2..b1df0ef 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,13 +9,13 @@ OPTION(BUILD_QT_SUPPORT_LIB	OFF)
 
 IF(BUILD_QT_SUPPORT_LIB)
 
-    add_definitions("-DHGL_QT6")
+    add_definitions("-DHGL_QT5")
 
-    set(QT_MIN_VERSION "6.0.0")
-    find_package(Qt6 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS Core)
+    set(QT_MIN_VERSION "5.14.0")
+    find_package(Qt5 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS Core)
 
-    include_directories(${Qt6Core_INCLUDES})
-    add_definitions(${Qt6Core_DEFINITIONS})
+    include_directories(${Qt5Core_INCLUDES})
+    add_definitions(${Qt5Core_DEFINITIONS})
 
 	IF(WIN32)
 		SET(HGL_QT_MAIN_SOURCE ${CMPLATFORM_ROOT_SOURCE_PATH}/src/QT/QTWinUCS2.cpp)
@@ -23,7 +23,7 @@ IF(BUILD_QT_SUPPORT_LIB)
 		SET(HGL_QT_MAIN_SOURCE ${CMPLATFORM_ROOT_SOURCE_PATH}/src/QT/QTUnixUTF8.cpp)
 	ENDIF()
 
-	SET(HGL_QT_LIB CM.QT6Support)
+	SET(HGL_QT_LIB CM.QT5Support)
 ENDIF()
 
 add_subdirectory(${CMPLATFORM_ROOT_SOURCE_PATH})