diff --git a/src/nvimage/Filter.cpp b/src/nvimage/Filter.cpp
index aff287d..183f1fb 100644
--- a/src/nvimage/Filter.cpp
+++ b/src/nvimage/Filter.cpp
@@ -252,7 +252,7 @@ float SincFilter::evaluate(float x) const
 }
 
 
-KaiserFilter::KaiserFilter(float w) : Filter(w) { setParameters(4.0f, 1.0f); }
+KaiserFilter::KaiserFilter(float w) : Filter(w) { setParameters(/*alpha=*/4.0f, /*stretch=*/1.0f); }
 
 float KaiserFilter::evaluate(float x) const
 {
diff --git a/src/nvtt/Context.cpp b/src/nvtt/Context.cpp
index 1c149aa..e29501e 100644
--- a/src/nvtt/Context.cpp
+++ b/src/nvtt/Context.cpp
@@ -308,7 +308,7 @@ bool Compressor::Private::compress(const InputOptions::Private & inputOptions, c
             }
             else {
                 if (inputOptions.mipmapFilter == MipmapFilter_Kaiser) {
-                    float params[2] = { inputOptions.kaiserStretch, inputOptions.kaiserAlpha };
+                    float params[2] = { inputOptions.kaiserAlpha, inputOptions.kaiserStretch };
                     img.buildNextMipmap(MipmapFilter_Kaiser, inputOptions.kaiserWidth, params);
                 }
                 else {