diff --git a/accounts/abi/argument.go b/accounts/abi/argument.go
index 227a088b7d..c7009a6165 100644
--- a/accounts/abi/argument.go
+++ b/accounts/abi/argument.go
@@ -234,7 +234,7 @@ func (arguments Arguments) Pack(args ...interface{}) ([]byte, error) {
 	for _, abiArg := range abiArgs {
 		inputOffset += getTypeSize(abiArg.Type)
 	}
-	var ret []byte
+	var ret = make([]byte, 0, len(args))
 	for i, a := range args {
 		input := abiArgs[i]
 		// pack the input
diff --git a/beacon/engine/types.go b/beacon/engine/types.go
index a73691ca05..1dfcf5b71a 100644
--- a/beacon/engine/types.go
+++ b/beacon/engine/types.go
@@ -209,7 +209,7 @@ func ExecutableDataToBlock(params ExecutableData, versionedHashes []common.Hash,
 	if params.BaseFeePerGas != nil && (params.BaseFeePerGas.Sign() == -1 || params.BaseFeePerGas.BitLen() > 256) {
 		return nil, fmt.Errorf("invalid baseFeePerGas: %v", params.BaseFeePerGas)
 	}
-	var blobHashes []common.Hash
+	var blobHashes = make([]common.Hash, 0, len(txs))
 	for _, tx := range txs {
 		blobHashes = append(blobHashes, tx.BlobHashes()...)
 	}
diff --git a/common/compiler/solidity.go b/common/compiler/solidity.go
index 9de94017c2..f46ba4888d 100644
--- a/common/compiler/solidity.go
+++ b/common/compiler/solidity.go
@@ -63,7 +63,7 @@ func ParseCombinedJSON(combinedJSON []byte, source string, languageVersion strin
 		return parseCombinedJSONV8(combinedJSON, source, languageVersion, compilerVersion, compilerOptions)
 	}
 	// Compilation succeeded, assemble and return the contracts.
-	contracts := make(map[string]*Contract)
+	contracts := make(map[string]*Contract, len(output.Contracts))
 	for name, info := range output.Contracts {
 		// Parse the individual compilation results.
 		var abi, userdoc, devdoc interface{}
@@ -107,7 +107,7 @@ func parseCombinedJSONV8(combinedJSON []byte, source string, languageVersion str
 		return nil, err
 	}
 	// Compilation succeeded, assemble and return the contracts.
-	contracts := make(map[string]*Contract)
+	contracts := make(map[string]*Contract, len(output.Contracts))
 	for name, info := range output.Contracts {
 		contracts[name] = &Contract{
 			Code:        "0x" + info.Bin,