diff --git a/libraries/AC_AutoTune/AC_AutoTune_FreqResp.cpp b/libraries/AC_AutoTune/AC_AutoTune_FreqResp.cpp
index 5c5105e1da..804b580091 100644
--- a/libraries/AC_AutoTune/AC_AutoTune_FreqResp.cpp
+++ b/libraries/AC_AutoTune/AC_AutoTune_FreqResp.cpp
@@ -306,8 +306,8 @@ void AC_AutoTune_FreqResp::set_dwell_cycles(uint8_t cycles)
 {
     dwell_cycles = cycles;
     if (meas_peak_info_buffer != nullptr) { delete meas_peak_info_buffer;}
-    meas_peak_info_buffer = new ObjectBuffer<peak_info>(cycles);
+    meas_peak_info_buffer = NEW_NOTHROW ObjectBuffer<peak_info>(cycles);
     if (tgt_peak_info_buffer != nullptr) { delete tgt_peak_info_buffer;}
-    tgt_peak_info_buffer = new ObjectBuffer<peak_info>(cycles);
+    tgt_peak_info_buffer = NEW_NOTHROW ObjectBuffer<peak_info>(cycles);
 
 }
diff --git a/libraries/AC_AutoTune/AC_AutoTune_FreqResp.h b/libraries/AC_AutoTune/AC_AutoTune_FreqResp.h
index 6afb7b4697..7da1233cba 100644
--- a/libraries/AC_AutoTune/AC_AutoTune_FreqResp.h
+++ b/libraries/AC_AutoTune/AC_AutoTune_FreqResp.h
@@ -12,8 +12,8 @@ public:
     AC_AutoTune_FreqResp()
 {
     dwell_cycles = 6;
-    meas_peak_info_buffer = new ObjectBuffer<peak_info>(dwell_cycles);
-    tgt_peak_info_buffer = new ObjectBuffer<peak_info>(dwell_cycles);
+    meas_peak_info_buffer = NEW_NOTHROW ObjectBuffer<peak_info>(dwell_cycles);
+    tgt_peak_info_buffer = NEW_NOTHROW ObjectBuffer<peak_info>(dwell_cycles);
 }
 
     // Enumeration of input type