diff --git a/.circleci/config.yml b/.circleci/config.yml
index c8130f7a7..1bd574724 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -29,7 +29,7 @@ commands:
             - 'v15-lotus-params-'
           paths:
             - /var/tmp/filecoin-proof-parameters/
-      - run:  ./lotus fetch-params
+      - run:  ./lotus fetch-params --include-test-params
       - save_cache:
           name: Save parameters cache
           key: 'v15-lotus-params-{{ checksum "build/proof-params/parameters.json" }}'
diff --git a/build/paramfetch.go b/build/paramfetch.go
index 81b9be55d..802398444 100644
--- a/build/paramfetch.go
+++ b/build/paramfetch.go
@@ -37,7 +37,7 @@ type fetch struct {
 	errs []error
 }
 
-func GetParams(storage bool) error {
+func GetParams(storage bool, tests bool) error {
 	if err := os.Mkdir(paramdir, 0755); err != nil && !os.IsExist(err) {
 		return err
 	}
@@ -52,7 +52,7 @@ func GetParams(storage bool) error {
 	ft := &fetch{}
 
 	for name, info := range params {
-		if !SupportedSectorSize(info.SectorSize) {
+		if !(SupportedSectorSize(info.SectorSize) || (tests && info.SectorSize == 1<<10)) {
 			continue
 		}
 		if !storage && strings.HasSuffix(name, ".params") {
diff --git a/cli/params.go b/cli/params.go
index 9e8183b8a..eabee8d5e 100644
--- a/cli/params.go
+++ b/cli/params.go
@@ -14,9 +14,14 @@ var fetchParamCmd = &cli.Command{
 			Name:  "only-verify-keys",
 			Usage: "only download the verify keys",
 		},
+		&cli.BoolFlag{
+			Name:  "include-test-params",
+			Usage: "download params used for tests",
+		},
 	},
 	Action: func(cctx *cli.Context) error {
-		if err := build.GetParams(!cctx.Bool("only-verify-keys")); err != nil {
+		err := build.GetParams(!cctx.Bool("only-verify-keys"), cctx.Bool("include-test-params"))
+		if err != nil {
 			return xerrors.Errorf("fetching proof parameters: %w", err)
 		}
 
diff --git a/cmd/lotus-storage-miner/init.go b/cmd/lotus-storage-miner/init.go
index 3cddbf866..00e189cfe 100644
--- a/cmd/lotus-storage-miner/init.go
+++ b/cmd/lotus-storage-miner/init.go
@@ -59,7 +59,7 @@ var initCmd = &cli.Command{
 		log.Info("Initializing lotus storage miner")
 
 		log.Info("Checking proof parameters")
-		if err := build.GetParams(true); err != nil {
+		if err := build.GetParams(true, false); err != nil {
 			return xerrors.Errorf("fetching proof parameters: %w", err)
 		}
 
diff --git a/cmd/lotus-storage-miner/run.go b/cmd/lotus-storage-miner/run.go
index 913f81288..9a3944417 100644
--- a/cmd/lotus-storage-miner/run.go
+++ b/cmd/lotus-storage-miner/run.go
@@ -36,7 +36,7 @@ var runCmd = &cli.Command{
 		},
 	},
 	Action: func(cctx *cli.Context) error {
-		if err := build.GetParams(true); err != nil {
+		if err := build.GetParams(true, false); err != nil {
 			return xerrors.Errorf("fetching proof parameters: %w", err)
 		}
 
diff --git a/cmd/lotus/daemon.go b/cmd/lotus/daemon.go
index 05ca99a41..115970d54 100644
--- a/cmd/lotus/daemon.go
+++ b/cmd/lotus/daemon.go
@@ -58,7 +58,7 @@ var DaemonCmd = &cli.Command{
 			return err
 		}
 
-		if err := build.GetParams(false); err != nil {
+		if err := build.GetParams(false, false); err != nil {
 			return xerrors.Errorf("fetching proof parameters: %w", err)
 		}
 
diff --git a/go.sum b/go.sum
index 109f07c28..74e807872 100644
--- a/go.sum
+++ b/go.sum
@@ -162,7 +162,6 @@ github.com/ipfs/go-car v0.0.2 h1:j02lzgeijorstzoMl3nQmvvb8wjJUVCiOAl8XEwYMCQ=
 github.com/ipfs/go-car v0.0.2/go.mod h1:60pzeu308k5kVFHzq0HIi2kPtITgor+1ll1xuGk5JwQ=
 github.com/ipfs/go-cid v0.0.1/go.mod h1:GHWU/WuQdMPmIosc4Yn1bcCT7dSeX4lBafM7iqUPQvM=
 github.com/ipfs/go-cid v0.0.2/go.mod h1:GHWU/WuQdMPmIosc4Yn1bcCT7dSeX4lBafM7iqUPQvM=
-github.com/ipfs/go-cid v0.0.3 h1:UIAh32wymBpStoe83YCzwVQQ5Oy/H0FdxvUS6DJDzms=
 github.com/ipfs/go-cid v0.0.3/go.mod h1:GHWU/WuQdMPmIosc4Yn1bcCT7dSeX4lBafM7iqUPQvM=
 github.com/ipfs/go-cid v0.0.4-0.20191112011718-79e75dffeb10 h1:5mRf2p8Bv2iKiuPsGrQUrx38rdBm2T/03JCM6VWzoMc=
 github.com/ipfs/go-cid v0.0.4-0.20191112011718-79e75dffeb10/go.mod h1:/BYOuUoxkE+0f6tGzlzMvycuN+5l35VOR4Bpg2sCmds=
@@ -432,7 +431,6 @@ github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1 h1:lYpkrQH5ajf0
 github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1/go.mod h1:pD8RvIylQ358TN4wwqatJ8rNavkEINozVn9DtGI3dfQ=
 github.com/minio/sha256-simd v0.0.0-20190131020904-2d45a736cd16/go.mod h1:2FMWW+8GMoPweT6+pI63m9YE3Lmw4J71hV56Chs1E/U=
 github.com/minio/sha256-simd v0.0.0-20190328051042-05b4dd3047e5/go.mod h1:2FMWW+8GMoPweT6+pI63m9YE3Lmw4J71hV56Chs1E/U=
-github.com/minio/sha256-simd v0.1.0 h1:U41/2erhAKcmSI14xh/ZTUdBPOzDOIfS93ibzUSl8KM=
 github.com/minio/sha256-simd v0.1.0/go.mod h1:2FMWW+8GMoPweT6+pI63m9YE3Lmw4J71hV56Chs1E/U=
 github.com/minio/sha256-simd v0.1.1-0.20190913151208-6de447530771 h1:MHkK1uRtFbVqvAgvWxafZe54+5uBxLluGylDiKgdhwo=
 github.com/minio/sha256-simd v0.1.1-0.20190913151208-6de447530771/go.mod h1:B5e1o+1/KgNmWrSQK08Y6Z1Vb5pwIktudl0J58iy0KM=
diff --git a/lib/sectorbuilder/sectorbuilder_test.go b/lib/sectorbuilder/sectorbuilder_test.go
index 2f9853721..201ee3c33 100644
--- a/lib/sectorbuilder/sectorbuilder_test.go
+++ b/lib/sectorbuilder/sectorbuilder_test.go
@@ -25,7 +25,7 @@ func TestSealAndVerify(t *testing.T) {
 
 	build.SectorSizes = []uint64{sectorSize}
 
-	if err := build.GetParams(true); err != nil {
+	if err := build.GetParams(true, true); err != nil {
 		t.Fatalf("%+v", err)
 	}