diff --git a/src/bls/bls.cpp b/src/bls/bls.cpp
index bf71b40ff50c..49981ee9190f 100644
--- a/src/bls/bls.cpp
+++ b/src/bls/bls.cpp
@@ -66,6 +66,9 @@ void CBLSSecretKey::MakeNewKey()
         GetStrongRandBytes({buf, sizeof(buf)});
         try {
             impl = bls::PrivateKey::FromBytes(bls::Bytes(reinterpret_cast<const uint8_t*>(buf), SerSize));
+            if (impl == bls::PrivateKey()) {
+                continue;
+            }
             break;
         } catch (...) {
         }
diff --git a/src/bls/bls.h b/src/bls/bls.h
index 6c3a7f2010e9..19dd5ae7611c 100644
--- a/src/bls/bls.h
+++ b/src/bls/bls.h
@@ -111,6 +111,11 @@ class CBLSWrapper
         } else {
             try {
                 impl = ImplType::FromBytes(bls::Bytes(vecBytes.data(), vecBytes.size()), specificLegacyScheme);
+                if (impl == ImplType()) {
+                    Reset();
+                    cachedHash.SetNull();
+                    return;
+                }
                 fValid = true;
             } catch (...) {
                 Reset();