diff --git a/lmdb.h b/lmdb.h
index 793f6d40..b0e06f48 100644
--- a/lmdb.h
+++ b/lmdb.h
@@ -734,8 +734,8 @@ int  mdb_env_sync(MDB_env *env, int force);
 	 *  on opening next time, and transactions since the last non-weak
 	 *  checkpoint (meta-page update) will rolledback for consistency guarantee.
 	 */
+void mdb_env_close(MDB_env *env);
 void mdb_env_close_ex(MDB_env *env, int dont_sync);
-#define mdb_env_close(env) mdb_env_close_ex(env, 0)
 
 	/** @brief Set environment flags.
 	 *
diff --git a/mdb.c b/mdb.c
index e19b36db..c9083ee8 100644
--- a/mdb.c
+++ b/mdb.c
@@ -4776,6 +4776,12 @@ mdb_env_close0(MDB_env *env)
 	env->me_flags &= ~(MDB_ENV_ACTIVE|MDB_ENV_TXKEY);
 }
 
+void ESECT
+mdb_env_close(MDB_env *env)
+{
+	mdb_env_close_ex(env, 0);
+}
+
 void ESECT
 mdb_env_close_ex(MDB_env *env, int dont_sync)
 {