diff --git a/src/llmq/quorums_instantsend.cpp b/src/llmq/quorums_instantsend.cpp
index c84e00603025..6d5cd3cd4fad 100644
--- a/src/llmq/quorums_instantsend.cpp
+++ b/src/llmq/quorums_instantsend.cpp
@@ -1146,6 +1146,10 @@ void CInstantSendManager::UpdatedBlockTip(const CBlockIndex* pindexNew)
 
 void CInstantSendManager::HandleFullyConfirmedBlock(const CBlockIndex* pindex)
 {
+    if (!IsInstantSendEnabled()) {
+        return;
+    }
+
     LOCK(cs);
 
     auto& consensusParams = Params().GetConsensus();
@@ -1510,12 +1514,12 @@ void CInstantSendManager::WorkThreadMain()
 
 bool IsInstantSendEnabled()
 {
-    return sporkManager.IsSporkActive(SPORK_2_INSTANTSEND_ENABLED);
+    return !fReindex && !fImporting && sporkManager.IsSporkActive(SPORK_2_INSTANTSEND_ENABLED);
 }
 
 bool RejectConflictingBlocks()
 {
-    return sporkManager.IsSporkActive(SPORK_3_INSTANTSEND_BLOCK_FILTERING);
+    return !fReindex && !fImporting && sporkManager.IsSporkActive(SPORK_3_INSTANTSEND_BLOCK_FILTERING);
 }
 
 } // namespace llmq
diff --git a/src/validation.cpp b/src/validation.cpp
index 7e6c797fe633..89be636df084 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -2386,7 +2386,7 @@ bool CChainState::ConnectBlock(const CBlock& block, CValidationState& state, CBl
                                  REJECT_INVALID, "conflict-tx-lock");
             }
         }
-    } else {
+    } else if (!fReindex && !fImporting) {
         LogPrintf("ConnectBlock(DASH): spork is off, skipping transaction locking checks\n");
     }