diff --git a/src/parser.zig b/src/parser.zig
index 305d078..52b66bd 100644
--- a/src/parser.zig
+++ b/src/parser.zig
@@ -424,6 +424,10 @@ pub const Parser = struct {
 
         if (self.current.tag == .hash_foreign) {
             // name : type #foreign [lib] ["c_name"];   (extern global from libsystem etc.)
+            // Phase 5.0: `#foreign` is an alias for `extern`. Build the SAME
+            // extern-named AST the postfix `extern` global path builds below —
+            // lowering coalesces is_foreign/is_extern identically (decl.zig:1127,
+            // 1141), so this is behavior-preserving (snapshots unchanged).
             self.advance();
             var lib_ref: ?[]const u8 = null;
             if (self.current.tag == .identifier) {
@@ -442,9 +446,9 @@ pub const Parser = struct {
                 .name_span = name_span,
                 .type_annotation = type_node,
                 .value = null,
-                .is_foreign = true,
-                .foreign_lib = lib_ref,
-                .foreign_name = c_name,
+                .is_extern = true,
+                .extern_lib = lib_ref,
+                .extern_name = c_name,
                 .is_raw = name_is_raw,
             } });
         }