diff --git a/src/validation.cpp b/src/validation.cpp
index bc5dd39a0..b17686725 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -3297,11 +3297,11 @@ bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& sta
 
     // Check timestamp against prev
     if (block.GetBlockTime() <= pindexPrev->GetMedianTimePast())
-        return state.Invalid(false, REJECT_INVALID, "time-too-old", "block's timestamp is too early");
+        return state.Invalid(false, REJECT_INVALID, "time-too-old", strprintf("block's timestamp is too early %d %d", block.GetBlockTime(), pindexPrev->GetMedianTimePast()));
 
     // Check timestamp
     if (block.GetBlockTime() > nAdjustedTime + 2 * 60 * 60)
-        return state.Invalid(false, REJECT_INVALID, "time-too-new", "block timestamp too far in the future");
+        return state.Invalid(false, REJECT_INVALID, "time-too-new", strprintf("block timestamp too far in the future %d %d", block.GetBlockTime(), nAdjustedTime + 2 * 60 * 60));
 
     // check for version 2, 3 and 4 upgrades
     if((block.nVersion < 2 && nHeight >= consensusParams.BIP34Height) ||
@@ -3545,7 +3545,7 @@ bool ProcessNewBlock(const CChainParams& chainparams, const std::shared_ptr<cons
         CheckBlockIndex(chainparams.GetConsensus());
         if (!ret) {
             GetMainSignals().BlockChecked(*pblock, state);
-            return error("%s: AcceptBlock FAILED", __func__);
+            return error("%s: AcceptBlock FAILED: %s", __func__, FormatStateMessage(state));
         }
     }
 
@@ -3553,7 +3553,7 @@ bool ProcessNewBlock(const CChainParams& chainparams, const std::shared_ptr<cons
 
     CValidationState state; // Only used to report errors, not invalidity - ignore it
     if (!ActivateBestChain(state, chainparams, pblock))
-        return error("%s: ActivateBestChain failed", __func__);
+        return error("%s: ActivateBestChain failed: %s", __func__, FormatStateMessage(state));
 
     LogPrintf("%s : ACCEPTED\n", __func__);
     return true;