diff --git a/src/blackinput/linux/keyboardlinux.cpp b/src/blackinput/linux/keyboardlinux.cpp
index dd2789195..984822fa7 100644
--- a/src/blackinput/linux/keyboardlinux.cpp
+++ b/src/blackinput/linux/keyboardlinux.cpp
@@ -21,7 +21,7 @@ using namespace BlackMisc::Input;
 
 namespace BlackInput
 {
-
+    // https://www.cl.cam.ac.uk/~mgk25/ucs/keysymdef.h
     static QHash<int, Input::KeyCode> keyMapping
     {
         { XK_0, Key_0 },
@@ -76,6 +76,8 @@ namespace BlackInput
         { XK_BackSpace, Key_Back },
         { XK_Tab, Key_Tab },
         { XK_Escape, Key_Esc },
+        { XK_space, Key_Space },
+        { XK_dead_grave, Key_DeadGrave },
         { XK_comma, Key_Comma },
     };
 
diff --git a/src/blackinput/macos/keyboardmacos.mm b/src/blackinput/macos/keyboardmacos.mm
index 3cedf7c20..61ad3d757 100644
--- a/src/blackinput/macos/keyboardmacos.mm
+++ b/src/blackinput/macos/keyboardmacos.mm
@@ -19,7 +19,7 @@ using namespace BlackMisc::Input;
 
 namespace BlackInput
 {
-
+    // https://developer.apple.com/documentation/iokit/1592915-anonymous?language=objc
     static QHash<quint32, KeyCode> keyMapping
     {
         { kHIDUsage_Keyboard0, Key_0 },
@@ -67,6 +67,8 @@ namespace BlackInput
         { kHIDUsage_KeyboardDeleteOrBackspace, Key_Back },
         { kHIDUsage_KeyboardTab, Key_Tab },
         { kHIDUsage_KeyboardEscape, Key_Esc },
+        { kHIDUsage_KeyboardSpacebar, Key_Space },
+        { kHIDUsage_KeyboardGraveAccentAndTilde, Key_DeadGrave },
         { kHIDUsage_KeyboardComma, Key_Comma },
         { kHIDUsage_Keypad0, Key_Numpad0 },
         { kHIDUsage_Keypad1, Key_Numpad1 },
diff --git a/src/blackinput/win/keyboardwindows.cpp b/src/blackinput/win/keyboardwindows.cpp
index c9b17fe75..970b4f42d 100644
--- a/src/blackinput/win/keyboardwindows.cpp
+++ b/src/blackinput/win/keyboardwindows.cpp
@@ -67,6 +67,8 @@ namespace BlackInput
             { VK_BACK, Key_Back },
             { VK_TAB, Key_Tab },
             { VK_ESCAPE, Key_Esc },
+            { VK_SPACE, Key_Space },
+            { WM_DEADCHAR, Key_DeadGrave },
             { VK_MULTIPLY, Key_Multiply },
             { VK_OEM_COMMA, Key_Comma },
             { VK_NUMPAD0, Key_Numpad0 },
diff --git a/src/blackmisc/input/keyboardkey.cpp b/src/blackmisc/input/keyboardkey.cpp
index fb0492fd2..61f55e4a2 100644
--- a/src/blackmisc/input/keyboardkey.cpp
+++ b/src/blackmisc/input/keyboardkey.cpp
@@ -58,19 +58,21 @@ namespace BlackMisc
             {
             case Key_Multiply: return QStringLiteral("NumMultiply"); // return QStringLiteral(u"×");
             case Key_Divide:   return QStringLiteral("NumDivide");   // return QStringLiteral(u"÷");
-            case Key_Numpad0: return QStringLiteral("Num0");
-            case Key_Numpad1: return QStringLiteral("Num1");
-            case Key_Numpad2: return QStringLiteral("Num2");
-            case Key_Numpad3: return QStringLiteral("Num3");
-            case Key_Numpad4: return QStringLiteral("Num4");
-            case Key_Numpad5: return QStringLiteral("Num5");
-            case Key_Numpad6: return QStringLiteral("Num6");
-            case Key_Numpad7: return QStringLiteral("Num7");
-            case Key_Numpad8: return QStringLiteral("Num8");
-            case Key_Numpad9: return QStringLiteral("Num9");
-            case Key_Esc:     return QStringLiteral("ESC");
-            case Key_Tab:     return QStringLiteral("Tab");
-            case Key_Back:    return QStringLiteral("Backspace");
+            case Key_Numpad0:  return QStringLiteral("Num0");
+            case Key_Numpad1:  return QStringLiteral("Num1");
+            case Key_Numpad2:  return QStringLiteral("Num2");
+            case Key_Numpad3:  return QStringLiteral("Num3");
+            case Key_Numpad4:  return QStringLiteral("Num4");
+            case Key_Numpad5:  return QStringLiteral("Num5");
+            case Key_Numpad6:  return QStringLiteral("Num6");
+            case Key_Numpad7:  return QStringLiteral("Num7");
+            case Key_Numpad8:  return QStringLiteral("Num8");
+            case Key_Numpad9:  return QStringLiteral("Num9");
+            case Key_Esc:      return QStringLiteral("ESC");
+            case Key_Space:    return QStringLiteral("Space");
+            case Key_DeadGrave: return QStringLiteral("DeadGrave");
+            case Key_Tab:      return QStringLiteral("Tab");
+            case Key_Back:     return QStringLiteral("Backspace");
             default: return QChar::fromLatin1(static_cast<char>(m_keyCode));
             }
         }
diff --git a/src/blackmisc/input/keyboardkeylist.cpp b/src/blackmisc/input/keyboardkeylist.cpp
index dd59b8575..b6717deb7 100644
--- a/src/blackmisc/input/keyboardkeylist.cpp
+++ b/src/blackmisc/input/keyboardkeylist.cpp
@@ -48,6 +48,8 @@ namespace BlackMisc
                 CKeyboardKey(Key_Back),
                 CKeyboardKey(Key_Tab),
                 CKeyboardKey(Key_Esc),
+                CKeyboardKey(Key_Space),
+                CKeyboardKey(Key_DeadGrave),
                 CKeyboardKey(Key_A),
                 CKeyboardKey(Key_B),
                 CKeyboardKey(Key_C),
diff --git a/src/blackmisc/input/keycodes.h b/src/blackmisc/input/keycodes.h
index bb5b88fa7..1d7153bd3 100644
--- a/src/blackmisc/input/keycodes.h
+++ b/src/blackmisc/input/keycodes.h
@@ -29,7 +29,9 @@ namespace BlackMisc
             Key_AltRight,
             Key_Back,
             Key_Tab,
-            Key_Esc,
+            Key_Esc = 27,
+            Key_Space = 32,
+            Key_DeadGrave, // message is sent for a combining key, such as a diacritic.
             Key_Plus = 43,
             Key_Comma,
             Key_Minus,