diff --git a/CMakeLists.txt b/CMakeLists.txt
index 99464d9f4dc..f321f37a7c4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -200,7 +200,6 @@ elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang$")
     add_compile_options(-Wno-implicit-const-int-float-conversion)
     add_compile_options(-Wno-null-pointer-subtraction)
     add_compile_options(-Wno-unneeded-internal-declaration)
-    add_compile_options(-Wno-unused-but-set-variable)
     add_compile_options(-Wno-unused-const-variable)
     add_compile_options(-Wno-unused-function)
     add_compile_options(-Wno-unused-private-field)
diff --git a/Userland/Applications/SystemMonitor/ProcessModel.cpp b/Userland/Applications/SystemMonitor/ProcessModel.cpp
index b3cefcd4501..d4b5fe87995 100644
--- a/Userland/Applications/SystemMonitor/ProcessModel.cpp
+++ b/Userland/Applications/SystemMonitor/ProcessModel.cpp
@@ -334,7 +334,6 @@ void ProcessModel::update()
     auto all_processes = Core::ProcessStatisticsReader::get_all(m_proc_all);
 
     HashTable<int> live_tids;
-    u64 sum_time_scheduled = 0, sum_time_scheduled_kernel = 0;
     u64 total_time_scheduled_diff = 0;
     if (all_processes.has_value()) {
         if (m_has_total_scheduled_time)
@@ -382,8 +381,6 @@ void ProcessModel::update()
                 state.cpu_percent = 0;
                 state.priority = thread.priority;
                 state.state = thread.state;
-                sum_time_scheduled += thread.time_user + thread.time_kernel;
-                sum_time_scheduled_kernel += thread.time_kernel;
                 auto& thread_data = *m_threads.ensure(thread.tid, [] { return make<Thread>(); });
                 thread_data.previous_state = move(thread_data.current_state);
                 thread_data.current_state = move(state);
diff --git a/Userland/Utilities/disk_benchmark.cpp b/Userland/Utilities/disk_benchmark.cpp
index 5d677b3ed1f..d55c5073c44 100644
--- a/Userland/Utilities/disk_benchmark.cpp
+++ b/Userland/Utilities/disk_benchmark.cpp
@@ -147,7 +147,7 @@ Optional<Result> benchmark(const String& filename, int file_size, int block_size
     auto timer = Core::ElapsedTimer::start_new();
 
     ssize_t total_written = 0;
-    for (ssize_t j = 0; j < file_size; j += block_size) {
+    while (total_written < file_size) {
         auto nwritten = write(fd, buffer.data(), block_size);
         if (nwritten < 0) {
             perror("write");