diff --git a/pkg/services/rpcsrv/params/txBuilder.go b/pkg/services/rpcsrv/params/txBuilder.go
index 2c8272739..9872c7cc6 100644
--- a/pkg/services/rpcsrv/params/txBuilder.go
+++ b/pkg/services/rpcsrv/params/txBuilder.go
@@ -73,11 +73,7 @@ func ExpandArrayIntoScript(script *io.BinWriter, slice []Param) error {
 			if err != nil {
 				return errors.New("not a bool")
 			}
-			if val {
-				emit.Int(script, 1)
-			} else {
-				emit.Int(script, 0)
-			}
+			emit.Bool(script, val)
 		case smartcontract.ArrayType:
 			val, err := fp.Value.GetArray()
 			if err != nil {
diff --git a/pkg/services/rpcsrv/params/tx_builder_test.go b/pkg/services/rpcsrv/params/tx_builder_test.go
index 983e31abb..ed495b21b 100644
--- a/pkg/services/rpcsrv/params/tx_builder_test.go
+++ b/pkg/services/rpcsrv/params/tx_builder_test.go
@@ -62,13 +62,13 @@ func TestInvocationScriptCreationGood(t *testing.T) {
 		script: "ERHAHwwBYQwUb0WRYs7rJIsHHsFX2eT2/Sb9vlBBYn1bUg==",
 	}, {
 		ps:     Params{{RawMessage: []byte(`"a"`)}, {RawMessage: []byte(`[{"type": "Boolean", "value": true}]`)}},
-		script: "ERHAHwwBYQwUb0WRYs7rJIsHHsFX2eT2/Sb9vlBBYn1bUg==",
+		script: "CBHAHwwBYQwUb0WRYs7rJIsHHsFX2eT2/Sb9vlBBYn1bUg==",
 	}, {
 		ps:     Params{{RawMessage: []byte(`"a"`)}, {RawMessage: []byte(`[{"type": "Boolean", "value": false}]`)}},
-		script: "EBHAHwwBYQwUb0WRYs7rJIsHHsFX2eT2/Sb9vlBBYn1bUg==",
+		script: "CRHAHwwBYQwUb0WRYs7rJIsHHsFX2eT2/Sb9vlBBYn1bUg==",
 	}, {
 		ps:     Params{{RawMessage: []byte(`"a"`)}, {RawMessage: []byte(`[{"type": "Boolean", "value": "blah"}]`)}}, // C# code doesn't use strict type assertions for JSON-ised params
-		script: "ERHAHwwBYQwUb0WRYs7rJIsHHsFX2eT2/Sb9vlBBYn1bUg==",
+		script: "CBHAHwwBYQwUb0WRYs7rJIsHHsFX2eT2/Sb9vlBBYn1bUg==",
 	}}
 	for i, ps := range paramScripts {
 		method, err := ps.ps[0].GetString()
diff --git a/pkg/services/rpcsrv/server_test.go b/pkg/services/rpcsrv/server_test.go
index 764af4756..8f1ee23cd 100644
--- a/pkg/services/rpcsrv/server_test.go
+++ b/pkg/services/rpcsrv/server_test.go
@@ -1438,7 +1438,7 @@ var rpcTestCases = map[string][]rpcTestCase{
 				res, ok := inv.(*result.Invoke)
 				require.True(t, ok)
 				expectedInvScript := io.NewBufBinWriter()
-				emit.Int(expectedInvScript.BinWriter, 0)
+				emit.Bool(expectedInvScript.BinWriter, false)
 				emit.Int(expectedInvScript.BinWriter, int64(4))
 				emit.String(expectedInvScript.BinWriter, "good_string")
 				require.NoError(t, expectedInvScript.Err)
@@ -1456,7 +1456,7 @@ var rpcTestCases = map[string][]rpcTestCase{
 				res, ok := inv.(*result.Invoke)
 				require.True(t, ok)
 				expectedInvScript := io.NewBufBinWriter()
-				emit.Int(expectedInvScript.BinWriter, 0)
+				emit.Bool(expectedInvScript.BinWriter, false)
 				emit.Int(expectedInvScript.BinWriter, int64(4))
 				emit.String(expectedInvScript.BinWriter, "invalid_string")
 				require.NoError(t, expectedInvScript.Err)
@@ -1556,7 +1556,7 @@ var rpcTestCases = map[string][]rpcTestCase{
 				res, ok := inv.(*result.Invoke)
 				require.True(t, ok)
 				expectedInvScript := io.NewBufBinWriter()
-				emit.Int(expectedInvScript.BinWriter, 0)
+				emit.Bool(expectedInvScript.BinWriter, false)
 				emit.Int(expectedInvScript.BinWriter, int64(4))
 				emit.String(expectedInvScript.BinWriter, "good_string")
 				require.NoError(t, expectedInvScript.Err)
@@ -1574,7 +1574,7 @@ var rpcTestCases = map[string][]rpcTestCase{
 				res, ok := inv.(*result.Invoke)
 				require.True(t, ok)
 				expectedInvScript := io.NewBufBinWriter()
-				emit.Int(expectedInvScript.BinWriter, 0)
+				emit.Bool(expectedInvScript.BinWriter, false)
 				emit.Int(expectedInvScript.BinWriter, int64(4))
 				emit.String(expectedInvScript.BinWriter, "invalid_string")
 				require.NoError(t, expectedInvScript.Err)