diff --git a/libs/remix-simulator/src/vm-context.ts b/libs/remix-simulator/src/vm-context.ts
index ed45efabb7..0c9daed2bb 100644
--- a/libs/remix-simulator/src/vm-context.ts
+++ b/libs/remix-simulator/src/vm-context.ts
@@ -252,7 +252,7 @@ export class VMContext {
     return this.currentVm
   }
 
-  addBlock (block: Block, genesis?: Boolean) {
+  addBlock (block: Block, genesis?: boolean) {
     let blockNumber = bigIntToHex(block.header.number)
     if (blockNumber === '0x') {
       blockNumber = '0x0'
diff --git a/libs/remix-simulator/test/blocks.ts b/libs/remix-simulator/test/blocks.ts
index 6c4b0476ac..72b454b8dd 100644
--- a/libs/remix-simulator/test/blocks.ts
+++ b/libs/remix-simulator/test/blocks.ts
@@ -19,7 +19,7 @@ describe('blocks', () => {
 
       const expectedBlock = {
         baseFeePerGas: 1,
-        difficulty: '69762765929000',
+        difficulty: 0,
         extraData: '0x0',
         gasLimit: 8000000,
         gasUsed: 0,