diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1e7b71a..e743ab0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -106,9 +106,9 @@ if(USE_SYSTEM_NCNN)
         message(STATUS "Using glslang install located at ${GLSLANG_TARGET_DIR}")

         find_package(Threads)
+        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")