diff --git a/src/audio/impl/mixer.cpp b/src/audio/impl/mixer.cpp
index 30ec35b..c996ccd 100644
--- a/src/audio/impl/mixer.cpp
+++ b/src/audio/impl/mixer.cpp
@@ -158,9 +158,9 @@ namespace audio::impl{
 				//copy data into the output buffer
 				size_t real_floatcount = real_framecount * out_channels;
 				size_t offset_float = offset * data.channels;
-				for(size_t j = 0;j < real_floatcount;j += out_channels){
-					for(size_t k = 0;k < out_channels;++k){
-						foutput[j+k] += ((data.data + offset_float)[j + (k % data.channels)] * data.volume);
+				for(size_t j = 0, k = 0;j < real_floatcount;j += out_channels, k += data.channels){
+					for(size_t l = 0;l < out_channels;++l){
+						foutput[j+l] += ((data.data + offset_float)[k + (l % data.channels)] * data.volume);
 					}
 				}