diff --git a/src/api/api.cc b/src/api/api.cc
index 8423f288ef..930f193df8 100644
--- a/src/api/api.cc
+++ b/src/api/api.cc
@@ -165,11 +165,6 @@
 // Has to be the last include (doesn't have include guards):
 #include "src/api/api-macros.h"
 
-#define TRACE_BS(...)                                     \
-  do {                                                    \
-    if (i::FLAG_trace_backing_store) PrintF(__VA_ARGS__); \
-  } while (false)
-
 namespace v8 {
 
 // TODO(chromium:1323177): Add a separate global for OOMErrorCallback once the
@@ -10775,5 +10770,4 @@ TryToCopyAndConvertArrayToCppBuffer<CTypeInfoBuilder<double>::Build().GetId(),
 
 }  // namespace v8
 
-#undef TRACE_BS
 #include "src/api/api-macros-undef.h"
diff --git a/src/d8/d8.cc b/src/d8/d8.cc
index 74b76c718b..405567d756 100644
--- a/src/d8/d8.cc
+++ b/src/d8/d8.cc
@@ -102,11 +102,6 @@
 #define CHECK(condition) assert(condition)
 #endif
 
-#define TRACE_BS(...)                                     \
-  do {                                                    \
-    if (i::FLAG_trace_backing_store) PrintF(__VA_ARGS__); \
-  } while (false)
-
 namespace v8 {
 
 namespace {
@@ -5722,4 +5717,3 @@ int main(int argc, char* argv[]) { return v8::Shell::Main(argc, argv); }
 
 #undef CHECK
 #undef DCHECK
-#undef TRACE_BS