diff --git a/lib_rend/lib_rend.c b/lib_rend/lib_rend.c
index 22b9b0a5b9694fa0f14fd9041db81365ef771681..46f9734f1a2265c003f25bb33c086aecbb0f3e0b 100644
--- a/lib_rend/lib_rend.c
+++ b/lib_rend/lib_rend.c
@@ -446,13 +446,12 @@ static void accumulate2dArrayToBuffer(
 
     writePtr = buffer->data;
     for ( chnlIdx = 0; chnlIdx < buffer->config.numChannels; ++chnlIdx )
-        for ( chnlIdx = 0; chnlIdx < buffer->config.numChannels; ++chnlIdx )
+    {
+        for ( smplIdx = 0; smplIdx < buffer->config.numSamplesPerChannel; ++smplIdx )
         {
-            for ( smplIdx = 0; smplIdx < buffer->config.numSamplesPerChannel; ++smplIdx )
-            {
-                *writePtr++ += array[chnlIdx][smplIdx];
-            }
+            *writePtr++ += array[chnlIdx][smplIdx];
         }
+    }
 
     return;
 }