diff --git a/src/rest.cpp b/src/rest.cpp
index 5ab46d0071..946ebfde11 100644
--- a/src/rest.cpp
+++ b/src/rest.cpp
@@ -460,7 +460,7 @@ static bool rest_getutxos(HTTPRequest* req, const std::string& strURIPart)
                 oss >> fCheckMemPool;
                 oss >> vOutPoints;
             }
-        } catch (const std::ios_base::failure& e) {
+        } catch (const std::ios_base::failure&) {
             // abort in case of unreadable binary data
             return RESTERR(req, HTTP_BAD_REQUEST, "Parse error");
         }
diff --git a/src/test/coins_tests.cpp b/src/test/coins_tests.cpp
index 2fa5844239..45fd6aeaa3 100644
--- a/src/test/coins_tests.cpp
+++ b/src/test/coins_tests.cpp
@@ -513,7 +513,7 @@ BOOST_AUTO_TEST_CASE(ccoins_serialization)
         Coin cc4;
         ss4 >> cc4;
         BOOST_CHECK_MESSAGE(false, "We should have thrown");
-    } catch (const std::ios_base::failure& e) {
+    } catch (const std::ios_base::failure&) {
     }
 
     // Very large scriptPubKey (3*10^9 bytes) past the end of the stream
@@ -526,7 +526,7 @@ BOOST_AUTO_TEST_CASE(ccoins_serialization)
         Coin cc5;
         ss5 >> cc5;
         BOOST_CHECK_MESSAGE(false, "We should have thrown");
-    } catch (const std::ios_base::failure& e) {
+    } catch (const std::ios_base::failure&) {
     }
 }
 
@@ -724,7 +724,7 @@ static void CheckAddCoinBase(CAmount base_value, CAmount cache_value, CAmount mo
         test.cache.AddCoin(OUTPOINT, Coin(std::move(output), 1, coinbase), coinbase);
         test.cache.SelfTest();
         GetCoinsMapEntry(test.cache.map(), result_value, result_flags);
-    } catch (std::logic_error& e) {
+    } catch (std::logic_error&) {
         result_value = FAIL;
         result_flags = NO_ENTRY;
     }
@@ -785,7 +785,7 @@ void CheckWriteCoins(CAmount parent_value, CAmount child_value, CAmount expected
         WriteCoinsViewEntry(test.cache, child_value, child_flags);
         test.cache.SelfTest();
         GetCoinsMapEntry(test.cache.map(), result_value, result_flags);
-    } catch (std::logic_error& e) {
+    } catch (std::logic_error&) {
         result_value = FAIL;
         result_flags = NO_ENTRY;
     }
diff --git a/src/test/net_tests.cpp b/src/test/net_tests.cpp
index 1d9fb3ff37..9570b71b17 100644
--- a/src/test/net_tests.cpp
+++ b/src/test/net_tests.cpp
@@ -119,7 +119,7 @@ BOOST_AUTO_TEST_CASE(caddrdb_read)
         unsigned char pchMsgTmp[4];
         ssPeers1 >> pchMsgTmp;
         ssPeers1 >> addrman1;
-    } catch (const std::exception& e) {
+    } catch (const std::exception&) {
         exceptionThrown = true;
     }
 
@@ -152,7 +152,7 @@ BOOST_AUTO_TEST_CASE(caddrdb_read_corrupted)
         unsigned char pchMsgTmp[4];
         ssPeers1 >> pchMsgTmp;
         ssPeers1 >> addrman1;
-    } catch (const std::exception& e) {
+    } catch (const std::exception&) {
         exceptionThrown = true;
     }
     // Even through de-serialization failed addrman is not left in a clean state.