diff --git a/launcher/java/JavaInstallList.cpp b/launcher/java/JavaInstallList.cpp
index 5f133622..b29af857 100644
--- a/launcher/java/JavaInstallList.cpp
+++ b/launcher/java/JavaInstallList.cpp
@@ -170,7 +170,6 @@ void JavaListLoadTask::executeTask()
     m_job.reset(new JavaCheckerJob("Java detection"));
     connect(m_job.get(), &Task::finished, this, &JavaListLoadTask::javaCheckerFinished);
     connect(m_job.get(), &Task::progress, this, &Task::setProgress);
-    // stepProgress?
 
     qDebug() << "Probing the following Java paths: ";
     int id = 0;
diff --git a/launcher/net/Download.cpp b/launcher/net/Download.cpp
index bf0e5c26..082f963d 100644
--- a/launcher/net/Download.cpp
+++ b/launcher/net/Download.cpp
@@ -247,19 +247,20 @@ void Download::downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
 
     // use milliseconds for speed precision
     auto elapsed_ms = std::chrono::duration_cast<std::chrono::milliseconds>(elapsed);
-    auto bytes_recived_since = bytesReceived - m_last_progress_bytes;
-    auto dl_speed_bps = (double)bytes_recived_since / elapsed_ms.count() * 1000;
+    auto bytes_received_since = bytesReceived - m_last_progress_bytes;
+    auto dl_speed_bps = (double)bytes_received_since / elapsed_ms.count() * 1000;
     auto remaing_time_s = (bytesTotal - bytesReceived) / dl_speed_bps;
 
-    // current bytes out of total bytes
+    //: Current amount of bytes downloaded, out of the total amount of bytes in the download
     QString dl_progress = tr("%1  / %2").arg(humanReadableFileSize(bytesReceived)).arg(humanReadableFileSize(bytesTotal));
     
     QString dl_speed_str;
     if (elapsed_ms.count() > 0) {
-        // bytes per second
-        dl_speed_str = tr("%1/s (%2)").arg(humanReadableFileSize(dl_speed_bps)).arg(humanReadableDuration(remaing_time_s));
+        //: Download speed, in bytes per second (remaining download time in parenthesis)
+        dl_speed_str = tr("%1 /s (%2)").arg(humanReadableFileSize(dl_speed_bps)).arg(humanReadableDuration(remaing_time_s));
     } else {
-        dl_speed_str = tr("0 b/s");
+		//: Download speed at 0 bytes per second
+        dl_speed_str = tr("0 B/s");
     } 
 
     setDetails(dl_progress + "\n" + dl_speed_str);
diff --git a/launcher/net/NetAction.h b/launcher/net/NetAction.h
index df6ed995..a13d115f 100644
--- a/launcher/net/NetAction.h
+++ b/launcher/net/NetAction.h
@@ -44,8 +44,8 @@
 #include "QObjectPtr.h"
 #include "tasks/Task.h"
 
-static const QStringList s_units_si  {"kb", "MB", "GB", "TB"};
-static const QStringList s_units_kibi {"kiB", "MiB", "Gib", "TiB"};
+static const QStringList s_units_si  {"kB", "MB", "GB", "TB"};
+static const QStringList s_units_kibi {"KiB", "MiB", "Gib", "TiB"};
 
 inline QString humanReadableFileSize(double bytes, bool use_si = false, int decimal_points = 1) {
     const QStringList units = use_si ? s_units_si : s_units_kibi;
diff --git a/launcher/tasks/ConcurrentTask.cpp b/launcher/tasks/ConcurrentTask.cpp
index dbb4d94d..fae2f3dc 100644
--- a/launcher/tasks/ConcurrentTask.cpp
+++ b/launcher/tasks/ConcurrentTask.cpp
@@ -65,7 +65,7 @@ void ConcurrentTask::addTask(Task::Ptr task)
 
 void ConcurrentTask::executeTask()
 {
-    // Start One task, startNext hadels starting the up to the m_total_max_size
+    // Start one task, startNext handles starting the up to the m_total_max_size
     // while tracking the number currently being done
     QMetaObject::invokeMethod(this, &ConcurrentTask::startNext, Qt::QueuedConnection);
 }
@@ -293,9 +293,9 @@ void ConcurrentTask::updateState()
                       .arg(QString::number(m_doing.count()), QString::number(m_done.count()), QString::number(totalSize())));
     } else {
         setProgress(m_stepProgress, m_stepTotalProgress);
-        QString status = tr("Please wait ...");
+        QString status = tr("Please wait...");
         if (m_queue.size() > 0) {
-            status = tr("Waiting for 1 task to start ...");
+            status = tr("Waiting for a task to start...");
         } else if (m_doing.size() > 0) {
             status = tr("Executing 1 task:");
         } else if (m_done.size() > 0) {
diff --git a/launcher/tasks/Task.h b/launcher/tasks/Task.h
index 04a09187..799ed945 100644
--- a/launcher/tasks/Task.h
+++ b/launcher/tasks/Task.h
@@ -130,7 +130,7 @@ class Task : public QObject, public QRunnable {
     void failed(QString reason);
     void status(QString status);
     void details(QString details);
-    void stepProgress(TaskStepProgress const& task_progress); // 
+    void stepProgress(TaskStepProgress const& task_progress);
 
     /** Emitted when the canAbort() status has changed.
      */
diff --git a/launcher/ui/dialogs/ProgressDialog.cpp b/launcher/ui/dialogs/ProgressDialog.cpp
index 94feee44..246a0fd4 100644
--- a/launcher/ui/dialogs/ProgressDialog.cpp
+++ b/launcher/ui/dialogs/ProgressDialog.cpp
@@ -45,7 +45,7 @@
 #include "ui/widgets/SubTaskProgressBar.h"
 
 
-// map a value in a numaric range of an arbatray type to between 0 and INT_MAX
+// map a value in a numeric range of an arbitrary type to between 0 and INT_MAX
 // for getting the best precision out of the qt progress bar
 template<typename T, std::enable_if_t<std::is_arithmetic_v<T>, bool> = true>
 std::tuple<int, int> map_int_zero_max(T current, T range_max, T range_min)
diff --git a/launcher/ui/widgets/SubTaskProgressBar.h b/launcher/ui/widgets/SubTaskProgressBar.h
index 3375a0bc..8f8aeea2 100644
--- a/launcher/ui/widgets/SubTaskProgressBar.h
+++ b/launcher/ui/widgets/SubTaskProgressBar.h
@@ -18,8 +18,6 @@
  */
 #pragma once
 
-#include <qobjectdefs.h>
-#include <qwidget.h>
 #include <QWidget>
 #include "QObjectPtr.h"