diff --git a/libraries/AP_Scripting/generator/description/bindings.desc b/libraries/AP_Scripting/generator/description/bindings.desc
index 64fbdf9862..83e168fa57 100644
--- a/libraries/AP_Scripting/generator/description/bindings.desc
+++ b/libraries/AP_Scripting/generator/description/bindings.desc
@@ -426,10 +426,11 @@ ap_object AP_HAL::AnalogSource method voltage_average float
 ap_object AP_HAL::AnalogSource method voltage_latest float
 ap_object AP_HAL::AnalogSource method voltage_average_ratiometric float
 
-userdata AP_HAL::PWMSource rename PWMSource
-userdata AP_HAL::PWMSource method set_pin boolean uint8_t 0 UINT8_MAX "Scripting"'literal
-userdata AP_HAL::PWMSource method get_pwm_us uint16_t
-userdata AP_HAL::PWMSource method get_pwm_avg_us uint16_t
+-- disabled for 4.3.4 due to interrupt handling bug
+-- userdata AP_HAL::PWMSource rename PWMSource
+-- userdata AP_HAL::PWMSource method set_pin boolean uint8_t 0 UINT8_MAX "Scripting"'literal
+-- userdata AP_HAL::PWMSource method get_pwm_us uint16_t
+-- userdata AP_HAL::PWMSource method get_pwm_avg_us uint16_t
 
 singleton hal.gpio rename gpio
 singleton hal.gpio literal