diff --git a/wowViewerLib/CMakeLists.txt b/wowViewerLib/CMakeLists.txt
index b15bb00c..c913f7e3 100644
--- a/wowViewerLib/CMakeLists.txt
+++ b/wowViewerLib/CMakeLists.txt
@@ -611,7 +611,7 @@ if (LINK_VULKAN)
         set(Vulkan_FOUND ON PARENT_SCOPE)
         MESSAGE("Using Vulkan library, Vulkan_LIBRARY= ${Vulkan_LIBRARY}")
         if (NOT SPIRV_OPT_APP AND Vulkan_INCLUDE_DIR)
-            set(SPIRV_OPT_APP ${Vulkan_INCLUDE_DIR}/../Bin/spirv-opt)
+            set(SPIRV_OPT_APP ${Vulkan_INCLUDE_DIR}/../bin/spirv-opt)
         endif()
     ELSE()
         MESSAGE("Vulkan Lib was not found. Disabling vulkan build")