diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6d0097634f..97e3921c04 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -458,7 +458,7 @@ if (MATERIALX_BUILD_RENDER_CORE OR MATERIALX_BUILD_RENDER)
 endif ()
 if (MATERIALX_BUILD_RENDER)
     add_subdirectory(source/MaterialXRenderHw)
-    if (MATERIALX_BUILD_GEN_GLSL)
+    if (MATERIALX_BUILD_GEN_GLSL AND NOT MATERIALX_BUILD_IOS)
         add_subdirectory(source/MaterialXRenderGlsl)
     endif()
     if (APPLE AND MATERIALX_BUILD_GEN_MSL)