diff --git a/trie/encoding_test.go b/trie/encoding_test.go
index 16393313f7..65e775c325 100644
--- a/trie/encoding_test.go
+++ b/trie/encoding_test.go
@@ -18,6 +18,7 @@ package trie
 
 import (
 	"bytes"
+	crand "crypto/rand"
 	"encoding/hex"
 	"math/rand"
 	"testing"
@@ -97,7 +98,7 @@ func TestHexToCompactInPlaceRandom(t *testing.T) {
 	for i := 0; i < 10000; i++ {
 		l := rand.Intn(128)
 		key := make([]byte, l)
-		rand.Read(key)
+		crand.Read(key)
 		hexBytes := keybytesToHex(key)
 		hexOrig := []byte(string(hexBytes))
 		exp := hexToCompact(hexBytes)
diff --git a/trie/trie_test.go b/trie/trie_test.go
index de68992c12..8ae4db0716 100644
--- a/trie/trie_test.go
+++ b/trie/trie_test.go
@@ -18,6 +18,7 @@ package trie
 
 import (
 	"bytes"
+	crand "crypto/rand"
 	"encoding/binary"
 	"errors"
 	"fmt"
@@ -835,8 +836,8 @@ func TestDecodeNode(t *testing.T) {
 		elems = make([]byte, 20)
 	)
 	for i := 0; i < 5000000; i++ {
-		rand.Read(hash)
-		rand.Read(elems)
+		crand.Read(hash)
+		crand.Read(elems)
 		decodeNode(hash, elems)
 	}
 }