diff --git a/core/datasource/external/ethcall/engine.go b/core/datasource/external/ethcall/engine.go
index 8a633ce28e..be731d0e70 100644
--- a/core/datasource/external/ethcall/engine.go
+++ b/core/datasource/external/ethcall/engine.go
@@ -321,7 +321,7 @@ func (e *Engine) Poll(ctx context.Context, wallTime time.Time) {
 			if call.triggered(prevEthBlock, nextEthBlockIsh) {
 				res, err := call.Call(ctx, e.client, nextEthBlock.Number.Uint64())
 				if err != nil {
-					e.log.Error("failed to call contract", logging.Error(err), logging.Uint64("chain-id", e.chainID.Load()))
+					e.log.Error("failed to call contract", logging.Error(err), logging.String("spec-id", specID), logging.Uint64("chain-id", e.chainID.Load()))
 					event := makeErrorChainEvent(err.Error(), specID, nextEthBlockIsh, e.chainID.Load())
 					e.forwarder.ForwardFromSelf(event)
 					e.lastSent = nextEthBlockIsh