diff --git a/src/processors/chain/ChainIOProcessor.cpp b/src/processors/chain/ChainIOProcessor.cpp
index 01c0b84c..7ec845cb 100644
--- a/src/processors/chain/ChainIOProcessor.cpp
+++ b/src/processors/chain/ChainIOProcessor.cpp
@@ -112,7 +112,10 @@ dsp::AudioBlock<float> ChainIOProcessor::processAudioInput (const AudioBuffer<fl
     if (oversampling.updateOSFactor())
     {
         sampleRateChanged = true;
-        latencyChangedCallbackFunc ((int) oversampling.getLatencySamples());
+        mainThreadAction->call ([this]
+                                {
+                                    latencyChangedCallbackFunc ((int) oversampling.getLatencySamples());
+                                }, true);
     }
 
     const auto useStereo = processChannelInputs (buffer);
diff --git a/src/processors/chain/ChainIOProcessor.h b/src/processors/chain/ChainIOProcessor.h
index 91feaaeb..46616c71 100644
--- a/src/processors/chain/ChainIOProcessor.h
+++ b/src/processors/chain/ChainIOProcessor.h
@@ -45,5 +45,7 @@ class ChainIOProcessor
 
     bool isPrepared = false;
 
+    chowdsp::SharedDeferredAction mainThreadAction;
+
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ChainIOProcessor)
 };