diff --git a/bindings/python/test_rot.py b/bindings/python/test_rot.py
index 39deda45c..e4f5dce01 100644
--- a/bindings/python/test_rot.py
+++ b/bindings/python/test_rot.py
@@ -70,6 +70,7 @@ class TestClass:
 
         assert rot.set_ext_func(0, 0) is None
         assert rot.set_ext_level(0, value) is None
+        assert rot.set_ext_parm(0, value) is None
 
         status = 0
         assert rot.set_func(1, status) is None
diff --git a/bindings/rotator.swg b/bindings/rotator.swg
index 0e5507a3f..f8f4fcf1e 100644
--- a/bindings/rotator.swg
+++ b/bindings/rotator.swg
@@ -91,6 +91,7 @@ typedef struct Rot {
 
 	ROTMETHOD2(set_ext_func, hamlib_token_t, int)
 	ROTMETHOD2(set_ext_level, hamlib_token_t, value_t)
+	ROTMETHOD2(set_ext_parm, hamlib_token_t, value_t)
 
 	ROTMETHOD2(set_func, setting_t, int)
 	extern void get_func(setting_t func, int *OUTPUT);