diff --git a/doc/contributions.txt b/doc/contributions.txt
--- a/doc/contributions.txt
+++ b/doc/contributions.txt
@@ -729,12 +729,13 @@ Thickbrick Sleaford
 	SNOW-635
 	SNOW-743
 	VWR-7109
 	VWR-9287
 	VWR-13483
 	VWR-13947
+	VWR-24420
 Thraxis Epsilon
 	SVC-371
 	VWR-383
 tiamat bingyi
 	CT-246
 Tofu Buzzard
diff --git a/indra/llimage/llpngwrapper.h b/indra/llimage/llpngwrapper.h
--- a/indra/llimage/llpngwrapper.h
+++ b/indra/llimage/llpngwrapper.h
@@ -85,15 +85,12 @@ private:
 	S32 mInterlaceType;
 	S32 mCompressionType;
 	S32 mFilterMethod;
 
 	U32 mFinalSize;
 
-	bool mHasBKGD;
-	png_color_16p mBackgroundColor;
-
 	F64 mGamma;
 
 	std::string mErrorMessage;
 };
 
 #endif
diff --git a/indra/llimage/llpngwrapper.cpp b/indra/llimage/llpngwrapper.cpp
--- a/indra/llimage/llpngwrapper.cpp
+++ b/indra/llimage/llpngwrapper.cpp
@@ -47,14 +47,12 @@ LLPngWrapper::LLPngWrapper()
 	  mColorType( 0 ),
 	  mChannels( 0 ),
 	  mInterlaceType( 0 ),
 	  mCompressionType( 0 ),
 	  mFilterMethod( 0 ),
 	  mFinalSize( 0 ),
-	  mHasBKGD(false),
-	  mBackgroundColor(),
 	  mGamma(0.f)
 {
 }
 
 LLPngWrapper::~LLPngWrapper()
 {
@@ -108,15 +106,15 @@ void LLPngWrapper::writeDataCallback(png
 void LLPngWrapper::writeFlush(png_structp png_ptr)
 {
 	// no-op since we're just writing to memory
 }
 
 // Read the PNG file using the libpng.  The low-level interface is used here
-// because we want to do various transformations (including setting the
-// matte background if any, and applying gama) which can't be done with
-// the high-level interface. The scanline also begins at the bottom of
+// because we want to do various transformations (including applying gama)
+// which can't be done with the high-level interface.
+// The scanline also begins at the bottom of
 // the image (per SecondLife conventions) instead of at the top, so we
 // must assign row-pointers in "reverse" order.
 BOOL LLPngWrapper::readPng(U8* src, LLImageRaw* rawImage, ImageInfo *infop)
 {
 	try
 	{
@@ -198,14 +196,13 @@ BOOL LLPngWrapper::readPng(U8* src, LLIm
 void LLPngWrapper::normalizeImage()
 {
 	//		1. Expand any palettes
 	//		2. Convert grayscales to RGB
 	//		3. Create alpha layer from transparency
 	//		4. Ensure 8-bpp for all images
-	//		5. Apply background matte if any
-	//		6. Set (or guess) gamma
+	//		5. Set (or guess) gamma
 
 	if (mColorType == PNG_COLOR_TYPE_PALETTE)
 	{
 		png_set_palette_to_rgb(mReadPngPtr);
 	}
     if (mColorType == PNG_COLOR_TYPE_GRAY && mBitDepth < 8)
@@ -226,18 +223,12 @@ void LLPngWrapper::normalizeImage()
 		png_set_packing(mReadPngPtr);
 	}
 	else if (mBitDepth == 16)
 	{
 		png_set_strip_16(mReadPngPtr);
 	}
-	mHasBKGD = png_get_bKGD(mReadPngPtr, mReadInfoPtr, &mBackgroundColor);
-	if (mHasBKGD)
-	{
-		png_set_background(mReadPngPtr, mBackgroundColor,
-			PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
-	}
 
 #if LL_DARWIN
 	const F64 SCREEN_GAMMA = 1.8;
 #else
 	const F64 SCREEN_GAMMA = 2.2;
 #endif
@@ -258,13 +249,12 @@ void LLPngWrapper::updateMetaData()
 	png_read_update_info(mReadPngPtr, mReadInfoPtr);
     mWidth = png_get_image_width(mReadPngPtr, mReadInfoPtr);
     mHeight = png_get_image_height(mReadPngPtr, mReadInfoPtr);
     mBitDepth = png_get_bit_depth(mReadPngPtr, mReadInfoPtr);
     mColorType = png_get_color_type(mReadPngPtr, mReadInfoPtr);
 	mChannels = png_get_channels(mReadPngPtr, mReadInfoPtr);
-	mHasBKGD = png_get_bKGD(mReadPngPtr, mReadInfoPtr, &mBackgroundColor);
 }
 
 // Method to write raw image into PNG at dest. The raw scanline begins
 // at the bottom of the image per SecondLife conventions.
 BOOL LLPngWrapper::writePng(const LLImageRaw* rawImage, U8* dest)
 {