diff --git a/image/src/Decoder.cpp b/image/src/Decoder.cpp
index 9ffd07532f9..2d895724780 100644
--- a/image/src/Decoder.cpp
+++ b/image/src/Decoder.cpp
@@ -8,6 +8,7 @@
 #include "nsIServiceManager.h"
 #include "nsIConsoleService.h"
 #include "nsIScriptError.h"
+#include "sampler.h"
 
 namespace mozilla {
 namespace image {
@@ -67,6 +68,8 @@ Decoder::InitSharedDecoder()
 void
 Decoder::Write(const char* aBuffer, uint32_t aCount)
 {
+  SAMPLE_LABEL("ImageDecoder", "Write");
+
   // We're strict about decoder errors
   NS_ABORT_IF_FALSE(!HasDecoderError(),
                     "Not allowed to make more decoder calls after error!");