diff --git a/Mac/Modules/ctl/_Ctlmodule.c b/Mac/Modules/ctl/_Ctlmodule.c
index 5f27ed3..7571c3f 100644
--- a/Mac/Modules/ctl/_Ctlmodule.c
+++ b/Mac/Modules/ctl/_Ctlmodule.c
@@ -6046,7 +6046,7 @@
 
 #if TARGET_API_MAC_CARBON
 	{"CreateTabsControl", (PyCFunction)Ctl_CreateTabsControl, 1,
-	 NULL},
+	 "(WindowPtr window, Rect boundsRect, UInt16 size, UInt16 direction, ControlTabEntry tabArray) -> (ControlHandle outControl)"},
 #endif
 	{NULL, NULL, 0}
 };
diff --git a/Mac/Modules/ctl/ctlsupport.py b/Mac/Modules/ctl/ctlsupport.py
index 4529484..5538608 100644
--- a/Mac/Modules/ctl/ctlsupport.py
+++ b/Mac/Modules/ctl/ctlsupport.py
@@ -777,6 +777,7 @@
 return _res;"""
 
 f = ManualGenerator("CreateTabsControl", createtabscontrol_body, condition="#if TARGET_API_MAC_CARBON")
+f.docstring = lambda: "(WindowPtr window, Rect boundsRect, UInt16 size, UInt16 direction, ControlTabEntry tabArray) -> (ControlHandle outControl)"
 module.add(f)
 
 # generate output (open the output file as late as possible)