diff --git a/src/hostapi/wdmks/pa_win_wdmks.c b/src/hostapi/wdmks/pa_win_wdmks.c
index 0df5ba381..ad703b497 100644
--- a/src/hostapi/wdmks/pa_win_wdmks.c
+++ b/src/hostapi/wdmks/pa_win_wdmks.c
@@ -4734,6 +4734,12 @@ static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
         {
             stream->capture.framesPerBuffer = stream->capture.pPin->frameSize;
         }
+
+        if(stream->capture.framesPerBuffer == 0) {
+            /* WinRT devices will reject a zero RequestedBufferSize. See https://github.com/PortAudio/portaudio/issues/761 */
+            stream->capture.framesPerBuffer = 1;
+        }
+
         PA_DEBUG(("Input frames chosen:%ld\n",stream->capture.framesPerBuffer));
 
         /* Setup number of packets to use */
@@ -4763,6 +4769,12 @@ static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
         {
             stream->render.framesPerBuffer = stream->render.pPin->frameSize;
         }
+
+        if(stream->render.framesPerBuffer == 0) {
+            /* WinRT devices will reject a zero RequestedBufferSize. See https://github.com/PortAudio/portaudio/issues/761 */
+            stream->render.framesPerBuffer = 1;
+        }
+
         PA_DEBUG(("Output frames chosen:%ld\n",stream->render.framesPerBuffer));
 
         /* Setup number of packets to use */