diff --git a/nimbus/core/chain/forked_chain.nim b/nimbus/core/chain/forked_chain.nim
index 997d3fbb7..a64f72809 100644
--- a/nimbus/core/chain/forked_chain.nim
+++ b/nimbus/core/chain/forked_chain.nim
@@ -482,6 +482,9 @@ proc importBlock*(c: ForkedChainRef, blk: Block): Result[void, string] =
   if header.parentHash notin c.blocks:
     # If it's parent is an invalid block
     # there is no hope the descendant is valid
+    debug "Parent block not found",
+      blockHash = header.blockHash.short,
+      parentHash = header.parentHash.short
     return err("Block is not part of valid chain")
 
   # TODO: If engine API keep importing blocks
diff --git a/nimbus/core/executor/process_block.nim b/nimbus/core/executor/process_block.nim
index c4bb9a626..dae78b5be 100644
--- a/nimbus/core/executor/process_block.nim
+++ b/nimbus/core/executor/process_block.nim
@@ -168,6 +168,8 @@ proc procBlkEpilogue(
       # TODO replace logging with better error
       debug "wrong state root in block",
         blockNumber = header.number,
+        blockHash = header.blockHash,
+        parentHash = header.parentHash,
         expected = header.stateRoot,
         actual = stateRoot,
         arrivedFrom = vmState.parent.stateRoot
@@ -178,6 +180,10 @@ proc procBlkEpilogue(
       let bloom = createBloom(vmState.receipts)
 
       if header.logsBloom != bloom:
+        debug "wrong logsBloom in block",
+          blockNumber = header.number,
+          actual = bloom,
+          expected = header.logsBloom
         return err("bloom mismatch")
 
       let receiptsRoot = calcReceiptsRoot(vmState.receipts)
@@ -185,6 +191,8 @@ proc procBlkEpilogue(
         # TODO replace logging with better error
         debug "wrong receiptRoot in block",
           blockNumber = header.number,
+          parentHash = header.parentHash.short,
+          blockHash = header.blockHash.short,
           actual = receiptsRoot,
           expected = header.receiptsRoot
         return err("receiptRoot mismatch")
@@ -197,6 +205,8 @@ proc procBlkEpilogue(
       if header.requestsHash.get != requestsHash:
         debug "wrong requestsHash in block",
           blockNumber = header.number,
+          parentHash = header.parentHash.short,
+          blockHash = header.blockHash.short,
           actual = requestsHash,
           expected = header.requestsHash.get
         return err("requestsHash mismatch")