diff --git a/CMakeLists.txt b/CMakeLists.txt
index dac535d..59f6e5b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -62,20 +62,13 @@ if(USE_SYSTEM_NCNN)
         message(STATUS "Using glslang install located at ${GLSLANG_TARGET_DIR}")
 
         find_package(Threads)
+        find_package(glslang REQUIRED)
+        find_package(SPIRV-Tools-opt REQUIRED)
 
-        include("${GLSLANG_TARGET_DIR}/OSDependentTargets.cmake")
-        include("${GLSLANG_TARGET_DIR}/OGLCompilerTargets.cmake")
         if(EXISTS "${GLSLANG_TARGET_DIR}/HLSLTargets.cmake")
             # hlsl support can be optional
             include("${GLSLANG_TARGET_DIR}/HLSLTargets.cmake")
         endif()
-        include("${GLSLANG_TARGET_DIR}/glslangTargets.cmake")
-        include("${GLSLANG_TARGET_DIR}/SPIRVTargets.cmake")
-
-        if (NOT TARGET glslang OR NOT TARGET SPIRV)
-            message(WARNING "glslang or SPIRV target not found! USE_SYSTEM_NCNN will be turned off.")
-            set(USE_SYSTEM_NCNN OFF)
-        endif()
     endif()
 endif()