diff --git a/src/bench/checkblock.cpp b/src/bench/checkblock.cpp
--- a/src/bench/checkblock.cpp
+++ b/src/bench/checkblock.cpp
@@ -29,7 +29,8 @@
     while (state.KeepRunning()) {
         CBlock block;
         stream >> block;
-        assert(stream.Rewind(sizeof(block_bench::block413567)));
+        bool rewound = stream.Rewind(sizeof(block_bench::block413567));
+        assert(rewound);
     }
 }
 
@@ -49,11 +50,12 @@
         // here.
         CBlock block;
         stream >> block;
-        assert(stream.Rewind(sizeof(block_bench::block413567)));
+        bool rewound = stream.Rewind(sizeof(block_bench::block413567));
+        assert(rewound);
 
         CValidationState validationState;
-        bool ret = CheckBlock(block, validationState, params, options);
-        assert(ret);
+        bool checked = CheckBlock(block, validationState, params, options);
+        assert(checked);
     }
 }
 
diff --git a/src/httprpc.cpp b/src/httprpc.cpp
--- a/src/httprpc.cpp
+++ b/src/httprpc.cpp
@@ -393,9 +393,9 @@
     // versioning
     RegisterHTTPHandler("/wallet/", false, rpcFunction);
 #endif
-    assert(EventBase());
-    httpRPCTimerInterface =
-        std::make_unique<HTTPRPCTimerInterface>(EventBase());
+    struct event_base *eventBase = EventBase();
+    assert(eventBase);
+    httpRPCTimerInterface = std::make_unique<HTTPRPCTimerInterface>(eventBase);
     RPCSetTimerInterface(httpRPCTimerInterface.get());
     return true;
 }
diff --git a/src/test/txvalidation_tests.cpp b/src/test/txvalidation_tests.cpp
--- a/src/test/txvalidation_tests.cpp
+++ b/src/test/txvalidation_tests.cpp
@@ -30,7 +30,7 @@
     coinbaseTx.vout[0].nValue = 1 * CENT;
     coinbaseTx.vout[0].scriptPubKey = scriptPubKey;
 
-    assert(CTransaction(coinbaseTx).IsCoinBase());
+    BOOST_CHECK(CTransaction(coinbaseTx).IsCoinBase());
 
     CValidationState state;