diff --git a/src/test/skiplist_tests.cpp b/src/test/skiplist_tests.cpp
--- a/src/test/skiplist_tests.cpp
+++ b/src/test/skiplist_tests.cpp
@@ -161,4 +161,51 @@
         BOOST_CHECK(vBlocksMain[r].GetAncestor(ret->nHeight) == ret);
     }
 }
+
+BOOST_AUTO_TEST_CASE(findearliestatleast_edge_test) {
+    std::list<CBlockIndex> blocks;
+    for (unsigned int timeMax : {100, 100, 100, 200, 200, 200, 300, 300, 300}) {
+        CBlockIndex *prev = blocks.empty() ? nullptr : &blocks.back();
+        blocks.emplace_back();
+        blocks.back().nHeight = prev ? prev->nHeight + 1 : 0;
+        blocks.back().pprev = prev;
+        blocks.back().BuildSkip();
+        blocks.back().nTimeMax = timeMax;
+    }
+
+    CChain chain;
+    chain.SetTip(&blocks.back());
+
+    BOOST_CHECK_EQUAL(chain.FindEarliestAtLeast(50)->nHeight, 0);
+    BOOST_CHECK_EQUAL(chain.FindEarliestAtLeast(100)->nHeight, 0);
+    BOOST_CHECK_EQUAL(chain.FindEarliestAtLeast(150)->nHeight, 3);
+    BOOST_CHECK_EQUAL(chain.FindEarliestAtLeast(200)->nHeight, 3);
+    BOOST_CHECK_EQUAL(chain.FindEarliestAtLeast(250)->nHeight, 6);
+    BOOST_CHECK_EQUAL(chain.FindEarliestAtLeast(300)->nHeight, 6);
+    BOOST_CHECK(!chain.FindEarliestAtLeast(350));
+
+    BOOST_CHECK_EQUAL(chain.FindEarliestAtLeast(0)->nHeight, 0);
+    BOOST_CHECK_EQUAL(chain.FindEarliestAtLeast(-1)->nHeight, 0);
+
+    BOOST_CHECK_EQUAL(
+        chain.FindEarliestAtLeast(std::numeric_limits<int64_t>::min())->nHeight,
+        0);
+    BOOST_CHECK_EQUAL(
+        chain.FindEarliestAtLeast(std::numeric_limits<unsigned int>::min())
+            ->nHeight,
+        0);
+    BOOST_CHECK_EQUAL(
+        chain
+            .FindEarliestAtLeast(
+                -int64_t(std::numeric_limits<unsigned int>::max()) - 1)
+            ->nHeight,
+        0);
+    BOOST_CHECK(
+        !chain.FindEarliestAtLeast(std::numeric_limits<int64_t>::max()));
+    BOOST_CHECK(
+        !chain.FindEarliestAtLeast(std::numeric_limits<unsigned int>::max()));
+    BOOST_CHECK(!chain.FindEarliestAtLeast(
+        int64_t(std::numeric_limits<unsigned int>::max()) + 1));
+}
+
 BOOST_AUTO_TEST_SUITE_END()