diff --git a/modules/juce_audio_devices/native/juce_win32_WASAPI.cpp b/modules/juce_audio_devices/native/juce_win32_WASAPI.cpp
index 204a749fa2..8319615ab6 100644
--- a/modules/juce_audio_devices/native/juce_win32_WASAPI.cpp
+++ b/modules/juce_audio_devices/native/juce_win32_WASAPI.cpp
@@ -928,7 +928,7 @@ public:
 
         if (sampleRates.size() == 0 && inputDevice != nullptr && outputDevice != nullptr)
         {
-            lastError = "The input and output devices don't share a common sample rate!";
+            lastError = TRANS("The input and output devices don't share a common sample rate!");
             return lastError;
         }
 
@@ -939,14 +939,14 @@ public:
 
         if (inputDevice != nullptr && ! inputDevice->open (currentSampleRate, inputChannels))
         {
-            lastError = "Couldn't open the input device!";
+            lastError = TRANS("Couldn't open the input device!");
             return lastError;
         }
 
         if (outputDevice != nullptr && ! outputDevice->open (currentSampleRate, outputChannels))
         {
             close();
-            lastError = "Couldn't open the output device!";
+            lastError = TRANS("Couldn't open the output device!");
             return lastError;
         }
 
@@ -963,7 +963,7 @@ public:
             if (! check (inputDevice->client->Start()))
             {
                 close();
-                lastError = "Couldn't start the input device!";
+                lastError = TRANS("Couldn't start the input device!");
                 return lastError;
             }
         }
@@ -975,7 +975,7 @@ public:
             if (! check (outputDevice->client->Start()))
             {
                 close();
-                lastError = "Couldn't start the output device!";
+                lastError = TRANS("Couldn't start the output device!");
                 return lastError;
             }
         }
diff --git a/modules/juce_gui_basics/windows/juce_ThreadWithProgressWindow.cpp b/modules/juce_gui_basics/windows/juce_ThreadWithProgressWindow.cpp
index 9a3a027e7d..82d12aa9b4 100644
--- a/modules/juce_gui_basics/windows/juce_ThreadWithProgressWindow.cpp
+++ b/modules/juce_gui_basics/windows/juce_ThreadWithProgressWindow.cpp
@@ -33,8 +33,10 @@ ThreadWithProgressWindow::ThreadWithProgressWindow (const String& title,
     timeOutMsWhenCancelling (timeOutMsWhenCancelling_)
 {
     alertWindow = LookAndFeel::getDefaultLookAndFeel()
-                    .createAlertWindow (title, String::empty, cancelButtonText,
-                                        String::empty, String::empty,
+                    .createAlertWindow (title, String(),
+                                        cancelButtonText.isEmpty() ? TRANS("Cancel")
+                                                                   : cancelButtonText,
+                                        String(), String(),
                                         AlertWindow::NoIcon, hasCancelButton ? 1 : 0,
                                         componentToCentreAround);
 
diff --git a/modules/juce_gui_basics/windows/juce_ThreadWithProgressWindow.h b/modules/juce_gui_basics/windows/juce_ThreadWithProgressWindow.h
index 862d6d0596..7bf85228a4 100644
--- a/modules/juce_gui_basics/windows/juce_ThreadWithProgressWindow.h
+++ b/modules/juce_gui_basics/windows/juce_ThreadWithProgressWindow.h
@@ -96,7 +96,7 @@ public:
                                         the thread to stop before killing it forcibly (see
                                         Thread::stopThread() )
         @param cancelButtonText         the text that should be shown in the cancel button
-                                        (if it has one)
+                                        (if it has one). Leave this empty for the default "Cancel"
         @param componentToCentreAround  if this is non-null, the window will be positioned
                                         so that it's centred around this component.
     */
@@ -104,7 +104,7 @@ public:
                               bool hasProgressBar,
                               bool hasCancelButton,
                               int timeOutMsWhenCancelling = 10000,
-                              const String& cancelButtonText = "Cancel",
+                              const String& cancelButtonText = String(),
                               Component* componentToCentreAround = nullptr);
 
     /** Destructor. */