diff --git a/modules/juce_audio_formats/codecs/juce_CoreAudioFormat.cpp b/modules/juce_audio_formats/codecs/juce_CoreAudioFormat.cpp
index 039da4afab..330b86b2c0 100644
--- a/modules/juce_audio_formats/codecs/juce_CoreAudioFormat.cpp
+++ b/modules/juce_audio_formats/codecs/juce_CoreAudioFormat.cpp
@@ -494,6 +494,9 @@ public:
             if (status != noErr)
                 return false;
 
+            if (numFramesToRead == 0)
+                break;
+
             if ((int) numFramesToRead < numThisTime)
             {
                 numThisTime = (int) numFramesToRead;