diff --git a/src/libOpenImageIO/imageioplugin.cpp b/src/libOpenImageIO/imageioplugin.cpp
index 9ad45042e3..d2a0210fff 100644
--- a/src/libOpenImageIO/imageioplugin.cpp
+++ b/src/libOpenImageIO/imageioplugin.cpp
@@ -469,12 +469,6 @@ pvt::catalog_all_plugins(std::string searchpath)
 
     std::unique_lock<std::recursive_mutex> lock(imageio_mutex);
     append_if_env_exists(searchpath, "OIIO_LIBRARY_PATH", true);
-#ifdef __APPLE__
-    append_if_env_exists(searchpath, "DYLD_LIBRARY_PATH");
-#endif
-#if defined(__linux__) || defined(__FreeBSD__)
-    append_if_env_exists(searchpath, "LD_LIBRARY_PATH");
-#endif
 
     size_t patlen = pattern.length();
     std::vector<std::string> dirs;