diff --git a/docs/reference/gtk/input-handling.md b/docs/reference/gtk/input-handling.md
index 45b4c41416..47a0c49487 100644
--- a/docs/reference/gtk/input-handling.md
+++ b/docs/reference/gtk/input-handling.md
@@ -140,6 +140,11 @@ capture phase, and key bindings locally, during the target phase.
Under the hood, all shortcuts are represented as instances of `GtkShortcut`,
and they are managed by `GtkShortcutController`.
+Note that GTK does not do anything to map the primary shortcut modifier
+to Command on macOS. If you want to let your application work
+on macOS, you explicitly need to provide keyboard shortcuts.
+The Command is named `Meta` (`GDK_META_MASK`) in GTK.
+
## Text input
When actual text input is needed (i.e. not just keyboard shortcuts),
diff --git a/docs/reference/gtk/migrating-3to4.md b/docs/reference/gtk/migrating-3to4.md
index 05c99fa2ff..68baff2d2c 100644
--- a/docs/reference/gtk/migrating-3to4.md
+++ b/docs/reference/gtk/migrating-3to4.md
@@ -455,7 +455,7 @@ In GTK 4, the meaning of modifiers has been fixed, and backends are
expected to map the platform conventions to the existing modifiers.
The expected use of modifiers in GTK 4 is:
-`GDK_CONTROL_MASK`
+`GDK_CONTROL_MASK` (`GDK_META_MASK` on macOS)
: Primary accelerators
`GDK_ALT_MASK`
@@ -464,7 +464,7 @@ The expected use of modifiers in GTK 4 is:
`GDK_SHIFT_MASK`
: Extending selections
-`GDK_CONTROL_MASK`
+`GDK_CONTROL_MASK` (`GDK_META_MASK` on macOS)
: Modifying selections
`GDK_CONTROL_MASK|GDK_ALT_MASK`
@@ -473,6 +473,11 @@ The expected use of modifiers in GTK 4 is:
Consequently, `GdkModifierIntent` and related APIs have been removed,
and `` is preferred over `` in accelerators.
+In GTK 3 on macOS, the `` modifier mapped to the Command key.
+In GTK 4, this is no longer the case: `` is synonym to ``.
+If you want to make your application to feel native on macOS,
+you need to add accelerators GD for macOS that use the `` modifier.
+
A related change is that GTK 4 no longer supports the use of archaic
X11 'real' modifiers with the names Mod1,..., Mod5, and `GDK_MOD1_MASK`
has been renamed to `GDK_ALT_MASK`.
diff --git a/gdk/gdkenums.h b/gdk/gdkenums.h
index 106db2bc0b..e368de6c2a 100644
--- a/gdk/gdkenums.h
+++ b/gdk/gdkenums.h
@@ -98,9 +98,9 @@ typedef enum
* @GDK_BUTTON3_MASK: the third mouse button.
* @GDK_BUTTON4_MASK: the fourth mouse button.
* @GDK_BUTTON5_MASK: the fifth mouse button.
- * @GDK_SUPER_MASK: the Super modifier
- * @GDK_HYPER_MASK: the Hyper modifier
- * @GDK_META_MASK: the Meta modifier
+ * @GDK_SUPER_MASK: the Super modifier.
+ * @GDK_HYPER_MASK: the Hyper modifier.
+ * @GDK_META_MASK: the Meta modifier. Maps to Command on macOS.
*
* Flags to indicate the state of modifier keys and mouse buttons
* in events.