diff --git a/lib/internal/crypto/util.js b/lib/internal/crypto/util.js
index e429cbc1e744e6..284b23c9ae618b 100644
--- a/lib/internal/crypto/util.js
+++ b/lib/internal/crypto/util.js
@@ -510,10 +510,14 @@ function getUsagesUnion(usageSet, ...usages) {
 
 function getBlockSize(name) {
   switch (name) {
-    case 'SHA-1': return 512;
-    case 'SHA-256': return 512;
-    case 'SHA-384': return 1024;
-    case 'SHA-512': return 1024;
+    case 'SHA-1':
+      // Fall through
+    case 'SHA-256':
+      return 512;
+    case 'SHA-384':
+      // Fall through
+    case 'SHA-512':
+      return 1024;
   }
 }