diff --git a/modules/juce_audio_basics/sources/juce_ResamplingAudioSource.cpp b/modules/juce_audio_basics/sources/juce_ResamplingAudioSource.cpp
index 44c3dada05..6a0704e0f1 100644
--- a/modules/juce_audio_basics/sources/juce_ResamplingAudioSource.cpp
+++ b/modules/juce_audio_basics/sources/juce_ResamplingAudioSource.cpp
@@ -230,7 +230,8 @@ void ResamplingAudioSource::setFilterCoefficients (double c1, double c2, double
 
 void ResamplingAudioSource::resetFilters()
 {
-    filterStates.clear ((size_t) numChannels);
+    if (filterStates != nullptr)
+        filterStates.clear ((size_t) numChannels);
 }
 
 void ResamplingAudioSource::applyFilter (float* samples, int num, FilterState& fs)