diff --git a/renderdoc/replay/replay_controller.cpp b/renderdoc/replay/replay_controller.cpp
index f56db2d04..63f4a65d6 100644
--- a/renderdoc/replay/replay_controller.cpp
+++ b/renderdoc/replay/replay_controller.cpp
@@ -1303,10 +1303,6 @@ bool ReplayController::SaveTexture(const TextureSave &saveData, const char *path
     }
     else if(sd.destType == FileType::PNG)
     {
-      // discard alpha if requested
-      for(uint32_t p = 0; sd.alpha == AlphaMapping::Discard && p < td.width * td.height; p++)
-        subdata[0][p * 4 + 3] = 255;
-
       int ret = stbi_write_png_to_func(fileWriteFunc, (void *)f, td.width, td.height, numComps,
                                        subdata[0], rowPitch);
       success = (ret != 0);
@@ -1316,10 +1312,6 @@ bool ReplayController::SaveTexture(const TextureSave &saveData, const char *path
     }
     else if(sd.destType == FileType::TGA)
     {
-      // discard alpha if requested
-      for(uint32_t p = 0; sd.alpha == AlphaMapping::Discard && p < td.width * td.height; p++)
-        subdata[0][p * 4 + 3] = 255;
-
       int ret = stbi_write_tga_to_func(fileWriteFunc, (void *)f, td.width, td.height, numComps,
                                        subdata[0]);
       success = (ret != 0);