diff --git a/src/db.cpp b/src/db.cpp
index 94629f3ca..e51d5d2cb 100644
--- a/src/db.cpp
+++ b/src/db.cpp
@@ -75,11 +75,10 @@ bool CDBEnv::Open(const boost::filesystem::path& path)
     if (GetBoolArg("-privdb", true))
         nEnvFlags |= DB_PRIVATE;
 
-    unsigned int nDbCache = GetArg("-dbcache", 25);
     dbenv.set_lg_dir(pathLogDir.string().c_str());
-    dbenv.set_cachesize(nDbCache / 1024, (nDbCache % 1024)*1048576, 1);
-    dbenv.set_lg_bsize(1048576);
-    dbenv.set_lg_max(10485760);
+    dbenv.set_cachesize(0, 0x100000, 1); // 1 MiB should be enough for just the wallet
+    dbenv.set_lg_bsize(0x10000);
+    dbenv.set_lg_max(1048576);
     dbenv.set_lk_max_locks(40000);
     dbenv.set_lk_max_objects(40000);
     dbenv.set_errfile(fopen(pathErrorFile.string().c_str(), "a")); /// debug