diff --git a/module_usb_audio/audio.xc b/module_usb_audio/audio.xc
index 194b4af7..61304a30 100755
--- a/module_usb_audio/audio.xc
+++ b/module_usb_audio/audio.xc
@@ -571,7 +571,7 @@ chanend ?c_adc)
                 // p_i2s_adc[index++] :> sample;
                 // Manual IN instruction since compiler generates an extra setc per IN (bug #15256)
                 asm volatile("in %0, res[%1]" : "=r"(sample)  : "r"(p_i2s_adc[index++]));
-                
+
                 /* Note the use of readBuffNo changes based on frameCount */
                 if(buffIndex)
                     samplesIn_1[((frameCount-1)&(I2S_CHANS_PER_FRAME-1))+i] = bitrev(sample); // channels 1, 3, 5.. on each line.