diff --git a/bindings/objc/MacOSobjcrtl.pas b/bindings/objc/MacOSobjcrtl.pas
new file mode 100644
index 000000000..df5f46e83
--- /dev/null
+++ b/bindings/objc/MacOSobjcrtl.pas
@@ -0,0 +1,29 @@
+unit MacOSobjcrtl;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  MacOSAll, objcrtl, objcrtl10, objcrtl20;
+
+implementation
+
+procedure InitObjCRunTime;
+var
+  MacVersion : SInt32;
+begin
+  if (Gestalt(gestaltSystemVersionMinor, MacVersion) = noErr) then begin
+    if MacVersion >= 5
+      then InitializeObjcRtl20(DefaultObjCLibName)
+      else InitializeObjcRtl10(DefaultObjCLibName);
+  end else
+    InitializeObjcRtl20(DefaultObjCLibName);
+end;
+
+
+initialization
+  InitObjCRuntime;
+
+end.
+