diff --git a/src/bin/auth/auth_config.cc b/src/bin/auth/auth_config.cc
index e8592ac553..de8325bed5 100644
--- a/src/bin/auth/auth_config.cc
+++ b/src/bin/auth/auth_config.cc
@@ -106,7 +106,7 @@ public:
         rollbackAddresses_ = old;
     }
     virtual void commit() {
-        rollbackAddresses_.release();
+        rollbackAddresses_.reset();
     }
 private:
     AuthSrv& server_;
diff --git a/src/bin/auth/tests/config_unittest.cc b/src/bin/auth/tests/config_unittest.cc
index 830de0d92d..05c6cce790 100644
--- a/src/bin/auth/tests/config_unittest.cc
+++ b/src/bin/auth/tests/config_unittest.cc
@@ -130,7 +130,7 @@ TEST_F(AuthConfigTest, invalidListenAddressConfig) {
     isc::testutils::portconfig::invalidListenAddressConfig(server);
 }
 
-// Try setting addresses trough config
+// Try setting addresses through config
 TEST_F(AuthConfigTest, listenAddressConfig) {
     isc::testutils::portconfig::listenAddressConfig(server);
 
diff --git a/src/lib/util/unittests/fork.cc b/src/lib/util/unittests/fork.cc
index 3414a3c187..7ed22f8251 100644
--- a/src/lib/util/unittests/fork.cc
+++ b/src/lib/util/unittests/fork.cc
@@ -93,10 +93,10 @@ provide_input(int *read_pipe, const void *input, const size_t length)
 
 /*
  * This creates a pipe, forks and reads the pipe and compares it
- * with given data. Used to check output of run in asynchronous way.
+ * with given data. Used to check output of run in an asynchronous way.
  */
 pid_t
-check_output(int *write_pipe, const void *output, const size_t length)
+check_output(int *write_pipe, const void* const output, const size_t length)
 {
     int pipes[2];
     if (pipe(pipes)) {
@@ -109,9 +109,7 @@ check_output(int *write_pipe, const void *output, const size_t length)
         return pid;
     } else {
         close(pipes[1]);
-        // We don't return the memory, but we're in tests and end this process
-        // right away.
-        unsigned char *buffer = new unsigned char[length + 1];
+        unsigned char* buffer = new unsigned char[length + 1];
         // Try to read one byte more to see if the output ends here
         size_t got_length(read_data(pipes[0], buffer, length + 1));
         bool ok(true);
@@ -133,8 +131,10 @@ check_output(int *write_pipe, const void *output, const size_t length)
                 fprintf(stderr, "%02hhx", output_c[i]);
             }
             fprintf(stderr, "\n");
+            delete [] buffer;
             exit(1);
         } else {
+            delete [] buffer;
             exit(0);
         }
     }