diff --git a/build/msvc/portaudio.def b/build/msvc/portaudio.def
index d25414f..bdaa8ee 100644
--- a/build/msvc/portaudio.def
+++ b/build/msvc/portaudio.def
@@ -35,7 +35,7 @@ Pa_GetStreamReadAvailable           @31
 Pa_GetStreamWriteAvailable          @32
 Pa_GetSampleSize                    @33
 Pa_Sleep                            @34
-PaAsio_GetAvailableLatencyValues    @50
+PaAsio_GetAvailableBufferSizes      @50
 PaAsio_ShowControlPanel             @51
 PaUtil_InitializeX86PlainConverters @52
 PaAsio_GetInputChannelName          @53