diff --git a/src/test/coins_tests.cpp b/src/test/coins_tests.cpp
--- a/src/test/coins_tests.cpp
+++ b/src/test/coins_tests.cpp
@@ -347,7 +347,7 @@
             tx.vout[0].nValue = i * SATOSHI;
             // Random sizes so we can test memory usage accounting
             tx.vout[0].scriptPubKey.assign(InsecureRand32() & 0x3F, 0);
-            unsigned int height = InsecureRand32();
+            const int height{int(InsecureRand32()) >> 1};
             Coin old_coin;
 
             // 2/20 times create a new coinbase
@@ -421,11 +421,11 @@
             assert(tx.vout.size() == 1);
             const COutPoint outpoint(tx.GetId(), 0);
             result[outpoint] =
-                Coin(tx.vout[0], height, CTransaction(tx).IsCoinBase());
+                Coin(tx.vout[0], height, CTransaction{tx}.IsCoinBase());
 
             // Call UpdateCoins on the top cache
             CTxUndo undo;
-            UpdateCoins(*(stack.back()), CTransaction(tx), undo, height);
+            UpdateCoins(*(stack.back()), CTransaction{tx}, undo, height);
 
             // Update the utxo set for future spends
             utxoset.insert(outpoint);
diff --git a/src/test/fuzz/coins_view.cpp b/src/test/fuzz/coins_view.cpp
--- a/src/test/fuzz/coins_view.cpp
+++ b/src/test/fuzz/coins_view.cpp
@@ -253,7 +253,8 @@
                     break;
                 }
                 bool expected_code_path = false;
-                const int height = fuzzed_data_provider.ConsumeIntegral<int>();
+                const int height{
+                    int(fuzzed_data_provider.ConsumeIntegral<uint32_t>() >> 1)};
                 const bool possible_overwrite =
                     fuzzed_data_provider.ConsumeBool();
                 try {
diff --git a/test/sanitizer_suppressions/ubsan b/test/sanitizer_suppressions/ubsan
--- a/test/sanitizer_suppressions/ubsan
+++ b/test/sanitizer_suppressions/ubsan
@@ -37,7 +37,6 @@
 implicit-integer-sign-change:*/new_allocator.h
 implicit-integer-sign-change:/usr/include/boost/date_time/format_date_parser.hpp
 implicit-integer-sign-change:bech32.cpp
-implicit-integer-sign-change:coins.h
 implicit-integer-sign-change:compat/stdin.cpp
 implicit-integer-sign-change:compressor.h
 implicit-integer-sign-change:crypto/*