diff --git a/pkg/core/blockchain.go b/pkg/core/blockchain.go
index ce6e19c2d..35a8a07fc 100644
--- a/pkg/core/blockchain.go
+++ b/pkg/core/blockchain.go
@@ -1616,7 +1616,7 @@ func ScriptFromWitness(hash util.Uint160, witness *transaction.Witness) ([]byte,
 
 	if len(verification) == 0 {
 		bb := io.NewBufBinWriter()
-		emit.AppCall(bb.BinWriter, hash, false)
+		emit.AppCall(bb.BinWriter, hash)
 		verification = bb.Bytes()
 	} else if h := witness.ScriptHash(); hash != h {
 		return nil, errors.New("witness hash mismatch")
diff --git a/pkg/rpc/request/txBuilder.go b/pkg/rpc/request/txBuilder.go
index a9659a266..0be028eb0 100644
--- a/pkg/rpc/request/txBuilder.go
+++ b/pkg/rpc/request/txBuilder.go
@@ -210,7 +210,7 @@ func CreateFunctionInvocationScript(contract util.Uint160, params Params) ([]byt
 		}
 	}
 
-	emit.AppCall(script.BinWriter, contract, false)
+	emit.AppCall(script.BinWriter, contract)
 	return script.Bytes(), nil
 }
 
@@ -224,6 +224,6 @@ func CreateInvocationScript(contract util.Uint160, funcParams []Param) ([]byte,
 	if err != nil {
 		return nil, err
 	}
-	emit.AppCall(script.BinWriter, contract, false)
+	emit.AppCall(script.BinWriter, contract)
 	return script.Bytes(), nil
 }
diff --git a/pkg/vm/emit/emit.go b/pkg/vm/emit/emit.go
index eeb791fd6..b962efb99 100644
--- a/pkg/vm/emit/emit.go
+++ b/pkg/vm/emit/emit.go
@@ -141,9 +141,8 @@ func Jmp(w *io.BinWriter, op opcode.Opcode, label uint16) {
 	Instruction(w, op, buf)
 }
 
-// AppCall emits an appcall, if tailCall is true, tailCall opcode will be
-// emitted instead.
-func AppCall(w *io.BinWriter, scriptHash util.Uint160, tailCall bool) {
+// AppCall emits call to provided contract.
+func AppCall(w *io.BinWriter, scriptHash util.Uint160) {
 	Bytes(w, scriptHash.BytesBE())
 	Syscall(w, "System.Contract.Call")
 }
@@ -152,21 +151,21 @@ func AppCall(w *io.BinWriter, scriptHash util.Uint160, tailCall bool) {
 func AppCallWithOperationAndArgs(w *io.BinWriter, scriptHash util.Uint160, operation string, args ...interface{}) {
 	Array(w, args...)
 	String(w, operation)
-	AppCall(w, scriptHash, false)
+	AppCall(w, scriptHash)
 }
 
 // AppCallWithOperationAndData emits an appcall with the given operation and data.
 func AppCallWithOperationAndData(w *io.BinWriter, scriptHash util.Uint160, operation string, data []byte) {
 	Bytes(w, data)
 	String(w, operation)
-	AppCall(w, scriptHash, false)
+	AppCall(w, scriptHash)
 }
 
 // AppCallWithOperation emits an appcall with the given operation.
 func AppCallWithOperation(w *io.BinWriter, scriptHash util.Uint160, operation string) {
 	Bool(w, false)
 	String(w, operation)
-	AppCall(w, scriptHash, false)
+	AppCall(w, scriptHash)
 }
 
 func isInstructionJmp(op opcode.Opcode) bool {