diff --git a/src/image_decode.cpp b/src/image_decode.cpp
index c01edbd..dd391e5 100644
--- a/src/image_decode.cpp
+++ b/src/image_decode.cpp
@@ -491,7 +491,6 @@ namespace bimg
 				if (UINT8_MAX != idxR)
 				{
 					const bool asFloat = exrHeader.pixel_types[idxR] == TINYEXR_PIXELTYPE_FLOAT;
-					uint32_t srcBpp = 32;
 					uint32_t dstBpp = asFloat ? 32 : 16;
 					format = asFloat ? TextureFormat::R32F : TextureFormat::R16F;
 					uint32_t stepR = 1;
@@ -501,7 +500,6 @@ namespace bimg
 
 					if (UINT8_MAX != idxG)
 					{
-						srcBpp += 32;
 						dstBpp = asFloat ? 64 : 32;
 						format = asFloat ? TextureFormat::RG32F : TextureFormat::RG16F;
 						stepG  = 1;
@@ -509,7 +507,6 @@ namespace bimg
 
 					if (UINT8_MAX != idxB)
 					{
-						srcBpp += 32;
 						dstBpp = asFloat ? 128 : 64;
 						format = asFloat ? TextureFormat::RGBA32F : TextureFormat::RGBA16F;
 						stepB  = 1;
@@ -517,7 +514,6 @@ namespace bimg
 
 					if (UINT8_MAX != idxA)
 					{
-						srcBpp += 32;
 						dstBpp = asFloat ? 128 : 64;
 						format = asFloat ? TextureFormat::RGBA32F : TextureFormat::RGBA16F;
 						stepA  = 1;