diff --git a/src/core.c b/src/core.c
index 9380f4d8..37b8ed19 100644
--- a/src/core.c
+++ b/src/core.c
@@ -10806,6 +10806,13 @@ __cold int mdbx_env_open(MDBX_env *env, const char *pathname,
     goto bailout;
   }
 
+  /* Set the position in files outside of the data to avoid corruption
+   * due to erroneous use of file descriptors in the application code. */
+  mdbx_fseek(env->me_lfd, UINT64_C(1) << 63);
+  mdbx_fseek(env->me_lazy_fd, UINT64_C(1) << 63);
+  if (env->me_dsync_fd != INVALID_HANDLE_VALUE)
+    mdbx_fseek(env->me_dsync_fd, UINT64_C(1) << 63);
+
   const MDBX_env_flags_t rigorous_flags =
       MDBX_SAFE_NOSYNC | MDBX_DEPRECATED_MAPASYNC;
   const MDBX_env_flags_t mode_flags = rigorous_flags | MDBX_NOMETASYNC |