diff --git a/src/tests/keyrange-unflat.c b/src/tests/keyrange-unflat.c
index 52de90f640c..a6159334945 100644
--- a/src/tests/keyrange-unflat.c
+++ b/src/tests/keyrange-unflat.c
@@ -20,8 +20,8 @@ static void test (void) {
     CKERR(r);
     r=toku_os_mkdir(ENVDIR, S_IRWXU+S_IRWXG+S_IRWXO);       CKERR(r);
     r=db_env_create(&env, 0); CKERR(r);
-    // set the cachetable to size 1 so that things won't fit.
-    r=env->set_cachesize(env, 0, 1, 1);
+    // set the cachetable to size 0 so that things fit.
+    r=env->set_cachesize(env, 0, 0, 1);
     env->set_errfile(env, stderr);
     r=env->open(env, ENVDIR, DB_INIT_LOCK|DB_INIT_LOG|DB_INIT_MPOOL|DB_INIT_TXN|DB_CREATE|DB_PRIVATE, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(r);
     r=db_create(&db, env, 0); CKERR(r);