diff --git a/src/main.cpp b/src/main.cpp
index e777eb470..f0b1925e3 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3200,6 +3200,17 @@ bool CheckBlockHeader(int32_t height,CBlockIndex *pindex, const CBlockHeader& bl
 {
     uint8_t pubkey33[33];
     // Check timestamp
+    {
+        uint256 hash; int32_t i;
+        hash = blockhdr.GetHash();
+        for (i=0; i<32; i++)
+            fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
+        fprintf(stderr," <- CheckBlockHeader\n");
+        hash = chainActive.Tip()->GetBlockHash();
+        for (i=0; i<32; i++)
+            fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
+        fprintf(stderr," <- chainTip\n");
+    }
     if (blockhdr.GetBlockTime() > GetAdjustedTime() + 60)
         return state.Invalid(error("CheckBlockHeader(): block timestamp too far in the future"),REJECT_INVALID, "time-too-new");
     // Check block version
diff --git a/src/miner.cpp b/src/miner.cpp
index 50ddd61c6..fdd5ea8c3 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -516,11 +516,11 @@ static bool ProcessBlockFound(CBlock* pblock, CWallet& wallet, CReserveKey& rese
             hash = pblock->hashPrevBlock;
             for (i=0; i<32; i++)
                 fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
-            fprintf(stderr," <- prev\n");
+            fprintf(stderr," <- prev (stale)\n");
             hash = chainActive.Tip()->GetBlockHash();
             for (i=0; i<32; i++)
                 fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
-            fprintf(stderr," <- chainTip\n");
+            fprintf(stderr," <- chainTip (stale)\n");
 
             return error("KomodoMiner: generated block is stale");
         }