diff --git a/filters_sync.go b/filters_sync.go
index 0232569..67f3787 100644
--- a/filters_sync.go
+++ b/filters_sync.go
@@ -117,16 +117,18 @@ func (throttle *ThrottleSync) Call(msg GenericMessage) {
 }
 
 type Convert[InMsgType any] struct {
-	SyncFilterImpl[InMsgType]
 	out     SyncFilter[GenericMessage]
 	convert func(InMsgType) GenericMessage
 }
 
 func MakeConvert[InMsgType any](convertFunc func(InMsgType) GenericMessage) *Convert[InMsgType] {
-	return &Convert[InMsgType]{SyncFilterImpl[InMsgType]{}, nil, convertFunc}
+	return &Convert[InMsgType]{nil, convertFunc}
 }
 
 func (convert *Convert[InMsgType]) Call(msg InMsgType) {
+	if convert.out == nil {
+		panic("Use ConvertTo() to set next element in the chain.")
+	}
 	convert.out.Call(convert.convert(msg))
 }
 
@@ -135,5 +137,5 @@ func (convert *Convert[InMsgType]) ConvertTo(out SyncFilter[GenericMessage]) {
 }
 
 func (convert *Convert[InMsgType]) Then(_ SyncFilter[InMsgType]) {
-	panic("Use ConvertTo() with Convert object")
+	panic("Use ConvertTo() with Convert object instead of Then().")
 }
diff --git a/filters_test.go b/filters_test.go
index 0c1d82f..69e8369 100644
--- a/filters_test.go
+++ b/filters_test.go
@@ -327,7 +327,7 @@ func TestThrottleSync(t *testing.T) {
 
 func TestConvert_failsWhenNotConverting(t *testing.T) {
 	a := assert.New(t)
-	tested := MakeConvert[int](func(in int) GenericMessage {
+	tested := MakeConvert(func(in int) GenericMessage {
 		a.Equal(in, 1)
 		return GenericMessage{}
 	})
@@ -342,7 +342,7 @@ func TestConvert_failsWhenNotConverting(t *testing.T) {
 func TestConvert(t *testing.T) {
 	a := assert.New(t)
 	numCalled := 0
-	tested := MakeConvert[int](func(in int) GenericMessage {
+	tested := MakeConvert(func(in int) GenericMessage {
 		a.Equal(in, 1)
 		numCalled += 1
 		return GenericMessage{}