diff --git a/libraries/audio/src/AudioInjector.cpp b/libraries/audio/src/AudioInjector.cpp
index ab0aa9d5c7..217b8b0d53 100644
--- a/libraries/audio/src/AudioInjector.cpp
+++ b/libraries/audio/src/AudioInjector.cpp
@@ -181,7 +181,7 @@ int64_t AudioInjector::injectNextFrame() {
         // make sure we actually have samples downloaded to inject
         if (_audioData.size()) {
 
-            auto sampleSize = (_options.stereo ? 2 : 1) * sizeof(AudioConstants::AudioSample);
+            int sampleSize = (_options.stereo ? 2 : 1) * sizeof(AudioConstants::AudioSample);
             auto numSamples = static_cast<int>(_audioData.size() / sampleSize);
             auto targetSize = numSamples * sampleSize;
             if (targetSize != _audioData.size()) {