--- a/AppRun.c
+++ b/AppRun.c
@@ -164,6 +164,10 @@
     char *old_env;
     size_t length;
     const char *format;
+    checkrt(usr_in_appdir);
+
+    if (optional_ld_preload)
+        putenv(optional_ld_preload);
 
     /* https://docs.python.org/2/using/cmdline.html#envvar-PYTHONHOME */
     SET_NEW_ENV(new_pythonhome, appdir_s, "PYTHONHOME=%s/usr/", appdir);
@@ -172,7 +176,7 @@
     SET_NEW_ENV(new_path, appdir_s*5 + strlen(old_env), "PATH=%s/usr/bin/:%s/usr/sbin/:%s/usr/games/:%s/bin/:%s/sbin/:%s", appdir, appdir, appdir, appdir, appdir, old_env);
 
     old_env = getenv("LD_LIBRARY_PATH") ?: "";
-    SET_NEW_ENV(new_ld_library_path, appdir_s*10 + strlen(old_env), "LD_LIBRARY_PATH=%s/usr/lib/:%s/usr/lib/i386-linux-gnu/:%s/usr/lib/x86_64-linux-gnu/:%s/usr/lib32/:%s/usr/lib64/:%s/lib/:%s/lib/i386-linux-gnu/:%s/lib/x86_64-linux-gnu/:%s/lib32/:%s/lib64/:%s", appdir, appdir, appdir, appdir, appdir, appdir, appdir, appdir, appdir, appdir, old_env);
+    SET_NEW_ENV(new_ld_library_path, appdir_s*10 + strlen(old_env), "LD_LIBRARY_PATH=%s%s/usr/lib/:%s/usr/lib/i386-linux-gnu/:%s/usr/lib/x86_64-linux-gnu/:%s/usr/lib32/:%s/usr/lib64/:%s/lib/:%s/lib/i386-linux-gnu/:%s/lib/x86_64-linux-gnu/:%s/lib32/:%s/lib64/:%s", optional_ld_library_path, appdir, appdir, appdir, appdir, appdir, appdir, appdir, appdir, appdir, appdir, old_env);

     old_env = getenv("PYTHONPATH") ?: "";
     SET_NEW_ENV(new_pythonpath, appdir_s + strlen(old_env), "PYTHONPATH=%s/usr/share/pyshared/:%s", appdir, old_env);
@@ -201,6 +205,9 @@
     if (ret == -1)
         die("Error executing '%s': %s\n", exe, strerror(error));

+    free(optional_ld_library_path);
+    if (optional_ld_preload)
+        free(optional_ld_preload);
     free(line);
     free(desktop_file);
     free(usr_in_appdir);