diff --git a/Blimp/Blimp.cpp b/Blimp/Blimp.cpp
index 05b5c45916..b4e50b2e6e 100644
--- a/Blimp/Blimp.cpp
+++ b/Blimp/Blimp.cpp
@@ -255,7 +255,9 @@ void Blimp::update_altitude()
 
 #if HAL_LOGGING_ENABLED
     if (should_log(MASK_LOG_CTUN)) {
+#if AP_INERTIALSENSOR_HARMONICNOTCH_ENABLED
         AP::ins().write_notch_log_messages();
+#endif
 #if HAL_GYROFFT_ENABLED
         gyro_fft.write_log_messages();
 #endif