diff --git a/eth/tracers/native/call_flat.go b/eth/tracers/native/call_flat.go
index 2dcd7b7f8624..43f5381fc972 100644
--- a/eth/tracers/native/call_flat.go
+++ b/eth/tracers/native/call_flat.go
@@ -264,16 +264,14 @@ func flatFromNested(input *callFrame, traceAddress []int, convertErrs bool, ctx
 	}
 
 	output = append(output, *frame)
-	if len(input.Calls) > 0 {
-		for i, childCall := range input.Calls {
-			childAddr := childTraceAddress(traceAddress, i)
-			childCallCopy := childCall
-			flat, err := flatFromNested(&childCallCopy, childAddr, convertErrs, ctx)
-			if err != nil {
-				return nil, err
-			}
-			output = append(output, flat...)
+	for i, childCall := range input.Calls {
+		childAddr := childTraceAddress(traceAddress, i)
+		childCallCopy := childCall
+		flat, err := flatFromNested(&childCallCopy, childAddr, convertErrs, ctx)
+		if err != nil {
+			return nil, err
 		}
+		output = append(output, flat...)
 	}
 
 	return output, nil