diff --git a/core/vm/instructions_test.go b/core/vm/instructions_test.go
index ec5de94ed..48caadf1f 100644
--- a/core/vm/instructions_test.go
+++ b/core/vm/instructions_test.go
@@ -214,6 +214,7 @@ func opBenchmark(bench *testing.B, op func(pc *uint64, interpreter *EVMInterpret
 	)
 
 	env.interpreter = evmInterpreter
+	evmInterpreter.intPool = poolOfIntPools.get()
 	// convert args
 	byteArgs := make([][]byte, len(args))
 	for i, arg := range args {
@@ -229,6 +230,7 @@ func opBenchmark(bench *testing.B, op func(pc *uint64, interpreter *EVMInterpret
 		op(&pc, evmInterpreter, nil, nil, stack)
 		stack.pop()
 	}
+	poolOfIntPools.put(evmInterpreter.intPool)
 }
 
 func BenchmarkOpAdd64(b *testing.B) {
@@ -474,6 +476,7 @@ func BenchmarkOpMstore(bench *testing.B) {
 	)
 
 	env.interpreter = evmInterpreter
+	evmInterpreter.intPool = poolOfIntPools.get()
 	mem.Resize(64)
 	pc := uint64(0)
 	memStart := big.NewInt(0)
@@ -484,4 +487,5 @@ func BenchmarkOpMstore(bench *testing.B) {
 		stack.pushN(value, memStart)
 		opMstore(&pc, evmInterpreter, nil, mem, stack)
 	}
+	poolOfIntPools.put(evmInterpreter.intPool)
 }