diff --git a/lib/internal/crypto/scrypt.js b/lib/internal/crypto/scrypt.js
index 63a5547e4cbf79..49e5b0624e1ae7 100644
--- a/lib/internal/crypto/scrypt.js
+++ b/lib/internal/crypto/scrypt.js
@@ -98,8 +98,8 @@ function check(password, salt, keylen, options) {
 
   let { N, r, p, maxmem } = defaults;
   if (options && options !== defaults) {
-    let has_N, has_r, has_p;
-    if (has_N = (options.N !== undefined)) {
+    const has_N = options.N !== undefined;
+    if (has_N) {
       N = options.N;
       validateUint32(N, 'N');
     }
@@ -108,7 +108,8 @@ function check(password, salt, keylen, options) {
       N = options.cost;
       validateUint32(N, 'cost');
     }
-    if (has_r = (options.r !== undefined)) {
+    const has_r = (options.r !== undefined);
+    if (has_r) {
       r = options.r;
       validateUint32(r, 'r');
     }
@@ -117,7 +118,8 @@ function check(password, salt, keylen, options) {
       r = options.blockSize;
       validateUint32(r, 'blockSize');
     }
-    if (has_p = (options.p !== undefined)) {
+    const has_p = options.p !== undefined;
+    if (has_p) {
       p = options.p;
       validateUint32(p, 'p');
     }