diff --git a/third_party/accessibility/base/numerics/BUILD.gn b/third_party/accessibility/base/numerics/BUILD.gn
index 74fe3929c0661..906c5815807e4 100644
--- a/third_party/accessibility/base/numerics/BUILD.gn
+++ b/third_party/accessibility/base/numerics/BUILD.gn
@@ -8,6 +8,8 @@
 # dependencies or depending on internal implementation details.
 source_set("numerics") {
   visibility = [ "//flutter/third_party/accessibility/*" ]
+  include_dirs = [ "//flutter/third_party/accessibility" ]
+
   sources = [
     "checked_math_impl.h",
     "clamped_math_impl.h",
@@ -17,6 +19,7 @@ source_set("numerics") {
     "safe_math_clang_gcc_impl.h",
     "safe_math_shared_impl.h",
   ]
+
   public = [
     "checked_math.h",
     "clamped_math.h",
@@ -25,4 +28,6 @@ source_set("numerics") {
     "safe_conversions.h",
     "safe_math.h",
   ]
+
+  deps = [ "//flutter/third_party/accessibility/ax_build" ]
 }
diff --git a/third_party/accessibility/base/numerics/safe_math_shared_impl.h b/third_party/accessibility/base/numerics/safe_math_shared_impl.h
index 80a23146d22a8..d08f1dfbb5d1b 100644
--- a/third_party/accessibility/base/numerics/safe_math_shared_impl.h
+++ b/third_party/accessibility/base/numerics/safe_math_shared_impl.h
@@ -15,8 +15,8 @@
 #include <limits>
 #include <type_traits>
 
+#include "ax_build/build_config.h"
 #include "base/numerics/safe_conversions.h"
-#include "build/build_config.h"
 
 #if defined(OS_ASMJS)
 // Optimized safe math instructions are incompatible with asmjs.