diff --git a/CMakeLists.txt b/CMakeLists.txt
index 44a63de6..8881e0e3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -204,7 +204,7 @@ option(DEV_BUILD "Enable development build (enables some debugging tools, local
 
 # Official build - changes text on the crash screen
 # PLEASE DO NOT USE ON UNOFFICIAL BUILDS. Thanks.
-option(OFFICIAL_BUILD "Official build (changes crash screen text)" OFF)
+option(OFFICIAL_COLOBOT_BUILD "Official build (changes crash screen text)" OFF)
 
 # Portable build - load all data from current directory
 option(PORTABLE "Portable build" OFF)
diff --git a/src/app/app.cpp b/src/app/app.cpp
index aabae7eb..893935a6 100644
--- a/src/app/app.cpp
+++ b/src/app/app.cpp
@@ -1871,7 +1871,12 @@ void CApplication::SetLanguage(Language language)
     // Update C++ locale
     try
     {
+#if defined(_MSC_VER) && defined(_DEBUG)
+        // Avoids failed assertion in VS debugger
+        throw -1;
+#else
         std::locale::global(std::locale(systemLocale.c_str()));
+#endif
     }
     catch (...)
     {
diff --git a/src/app/signal_handlers.cpp b/src/app/signal_handlers.cpp
index 1974ba3f..03771dab 100644
--- a/src/app/signal_handlers.cpp
+++ b/src/app/signal_handlers.cpp
@@ -133,7 +133,7 @@ void CSignalHandlers::ReportError(const std::string& errorMessage)
     msg << "including information on what you were doing before this happened and all the information below." << std::endl;
     msg << "==============================" << std::endl;
     #if BUILD_NUMBER == 0
-        #ifdef OFFICIAL_BUILD
+        #ifdef OFFICIAL_COLOBOT_BUILD
             msg << "You are running official " << COLOBOT_VERSION_DISPLAY << " build." << std::endl;
         #else
             // COLOBOT_VERSION_DISPLAY doesn't update if you don't run CMake after "git pull"
diff --git a/src/common/version.h.cmake b/src/common/version.h.cmake
index ad3714b3..ca377e4f 100644
--- a/src/common/version.h.cmake
+++ b/src/common/version.h.cmake
@@ -4,4 +4,4 @@
 #define COLOBOT_VERSION_DISPLAY "@COLOBOT_VERSION_DISPLAY@"
 
 #define BUILD_NUMBER @BUILD_NUMBER@
-#cmakedefine OFFICIAL_BUILD
+#cmakedefine OFFICIAL_COLOBOT_BUILD
diff --git a/src/graphics/engine/engine.cpp b/src/graphics/engine/engine.cpp
index 8c852bc4..5a056b7d 100644
--- a/src/graphics/engine/engine.cpp
+++ b/src/graphics/engine/engine.cpp
@@ -433,7 +433,7 @@ bool CEngine::ProcessEvent(const Event &event)
     {
         auto data = event.GetData<KeyEventData>();
 
-        if (data->key == KEY(F12))
+        if (data->key == KEY(F11) || data->key == KEY(F12))
         {
             m_showStats = !m_showStats;
             return false;
diff --git a/src/level/robotmain.cpp b/src/level/robotmain.cpp
index 3bf3e2d5..7f11ba1c 100644
--- a/src/level/robotmain.cpp
+++ b/src/level/robotmain.cpp
@@ -779,7 +779,7 @@ bool CRobotMain::ProcessEvent(Event &event)
 
         if (IsPhaseWithWorld(m_phase))
         {
-            if (data->key == KEY(F11))
+            if (data->key == KEY(F10))
             {
                 m_debugMenu->ToggleInterface();
                 return false;
diff --git a/src/ui/debug_menu.h b/src/ui/debug_menu.h
index e3ee0933..ecc6f81e 100644
--- a/src/ui/debug_menu.h
+++ b/src/ui/debug_menu.h
@@ -39,7 +39,7 @@ class CInterface;
 
 /**
  * \class CDebugMenu
- * \brief Handles debug menu (F11)
+ * \brief Handles debug menu (F10)
  *
  * There should always be only one instance of this class for each associated CRobotMain class.
  */