diff --git a/src/chain.cpp b/src/chain.cpp
index e0c29372dd7..b8158f7b0b9 100644
--- a/src/chain.cpp
+++ b/src/chain.cpp
@@ -151,7 +151,7 @@ int64_t GetBlockProofEquivalentTime(const CBlockIndex& to, const CBlockIndex& fr
     if (r.bits() > 63) {
         return sign * std::numeric_limits<int64_t>::max();
     }
-    return sign * r.GetLow64();
+    return sign * int64_t(r.GetLow64());
 }
 
 /** Find the last common ancestor two blocks have.
diff --git a/src/chain.h b/src/chain.h
index 8b03e66a96f..24b5026abae 100644
--- a/src/chain.h
+++ b/src/chain.h
@@ -475,7 +475,7 @@ public:
     /** Return the maximal height in the chain. Is equal to chain.Tip() ? chain.Tip()->nHeight : -1. */
     int Height() const
     {
-        return vChain.size() - 1;
+        return int(vChain.size()) - 1;
     }
 
     /** Set/initialize a chain with a given tip. */
diff --git a/test/sanitizer_suppressions/ubsan b/test/sanitizer_suppressions/ubsan
index 980e1f5296a..bcfb1881573 100644
--- a/test/sanitizer_suppressions/ubsan
+++ b/test/sanitizer_suppressions/ubsan
@@ -46,8 +46,6 @@ shift-base:test/fuzz/crypto_diff_fuzz_chacha20.cpp
 unsigned-integer-overflow:addrman.cpp
 unsigned-integer-overflow:arith_uint256.h
 unsigned-integer-overflow:common/bloom.cpp
-unsigned-integer-overflow:chain.cpp
-unsigned-integer-overflow:chain.h
 unsigned-integer-overflow:coins.cpp
 unsigned-integer-overflow:compressor.cpp
 unsigned-integer-overflow:core_write.cpp
@@ -63,8 +61,6 @@ unsigned-integer-overflow:validation.cpp
 implicit-integer-sign-change:addrman.h
 implicit-integer-sign-change:bech32.cpp
 implicit-integer-sign-change:common/bloom.cpp
-implicit-integer-sign-change:chain.cpp
-implicit-integer-sign-change:chain.h
 implicit-integer-sign-change:coins.h
 implicit-integer-sign-change:compat/stdin.cpp
 implicit-integer-sign-change:compressor.h
@@ -79,10 +75,8 @@ implicit-integer-sign-change:serialize.h
 implicit-integer-sign-change:test/streams_tests.cpp
 implicit-integer-sign-change:txmempool.cpp
 implicit-integer-sign-change:zmq/zmqpublishnotifier.cpp
-implicit-signed-integer-truncation,implicit-integer-sign-change:chain.h
 implicit-signed-integer-truncation:addrman.cpp
 implicit-signed-integer-truncation:addrman.h
-implicit-signed-integer-truncation:chain.h
 implicit-signed-integer-truncation:crypto/
 implicit-unsigned-integer-truncation:crypto/
 shift-base:arith_uint256.cpp