diff --git a/src/bls/bls.h b/src/bls/bls.h
index a74158f6e9..b74efd33fd 100644
--- a/src/bls/bls.h
+++ b/src/bls/bls.h
@@ -190,7 +190,17 @@ public:
         SetByteVector(vecBytes, specificLegacyScheme);
 
         if (checkMalleable && !CheckMalleable(vecBytes, specificLegacyScheme)) {
-            throw std::ios_base::failure("malleable BLS object");
+            // If CheckMalleable failed with specificLegacyScheme, we need to try again with the opposite scheme.
+            // Probably we received the BLS object sent with legacy scheme, but in the meanwhile the fork activated.
+            SetByteVector(vecBytes, !specificLegacyScheme);
+            if (!CheckMalleable(vecBytes, !specificLegacyScheme)) {
+                // Both attempts failed
+                throw std::ios_base::failure("malleable BLS object");
+            } else {
+                // Indeed the received vecBytes was in opposite scheme. But we can't keep it (mixing with the new scheme will lead to undefined behavior)
+                // Therefore, resetting current object (basically marking it as invalid).
+                Reset();
+            }
         }
     }