diff --git a/src/validation.cpp b/src/validation.cpp
index be1374e8105..adf9198b52c 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -33,6 +33,7 @@
 #include <script/script.h>
 #include <script/sigcache.h>
 #include <shutdown.h>
+#include <signet.h>
 #include <timedata.h>
 #include <tinyformat.h>
 #include <txdb.h>
@@ -1163,6 +1164,11 @@ bool ReadBlockFromDisk(CBlock& block, const FlatFilePos& pos, const Consensus::P
     if (!CheckProofOfWork(block.GetHash(), block.nBits, consensusParams))
         return error("ReadBlockFromDisk: Errors in block header at %s", pos.ToString());
 
+    // Signet only: check block solution
+    if (consensusParams.signet_blocks && !CheckSignetBlockSolution(block, consensusParams)) {
+        return error("ReadBlockFromDisk: Errors in block solution at %s", pos.ToString());
+    }
+
     return true;
 }
 
@@ -3332,6 +3338,11 @@ bool CheckBlock(const CBlock& block, BlockValidationState& state, const Consensu
     if (!CheckBlockHeader(block, state, consensusParams, fCheckPOW))
         return false;
 
+    // Signet only: check block solution
+    if (consensusParams.signet_blocks && fCheckPOW && !CheckSignetBlockSolution(block, consensusParams)) {
+        return state.Invalid(BlockValidationResult::BLOCK_CONSENSUS, "bad-signet-blksig", "signet block signature validation failure");
+    }
+
     // Check the merkle root.
     if (fCheckMerkleRoot) {
         bool mutated;