diff --git a/assets/asset_manager.cc b/assets/asset_manager.cc
index 2155d24a78a26..31b4db4230b4f 100644
--- a/assets/asset_manager.cc
+++ b/assets/asset_manager.cc
@@ -7,10 +7,6 @@
 #include "flutter/assets/directory_asset_bundle.h"
 #include "flutter/fml/trace_event.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace blink {
 
 AssetManager::AssetManager() = default;
diff --git a/flow/layers/platform_view_layer.cc b/flow/layers/platform_view_layer.cc
index 2d4b6d295fe92..19057fbfd4b9c 100644
--- a/flow/layers/platform_view_layer.cc
+++ b/flow/layers/platform_view_layer.cc
@@ -4,10 +4,6 @@
 
 #include "flutter/flow/layers/platform_view_layer.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace flow {
 
 PlatformViewLayer::PlatformViewLayer() = default;
diff --git a/fml/log_level.h b/fml/log_level.h
index 737e80db2ff68..8bed172db9ff8 100644
--- a/fml/log_level.h
+++ b/fml/log_level.h
@@ -16,6 +16,13 @@ constexpr LogSeverity LOG_ERROR = 2;
 constexpr LogSeverity LOG_FATAL = 3;
 constexpr LogSeverity LOG_NUM_SEVERITIES = 4;
 
+// One of the Windows headers defines ERROR to 0. This makes the token
+// concatenation in FML_LOG(ERROR) to resolve to LOG_0. We define this back to
+// the appropriate log level.
+#ifdef _WIN32
+#define LOG_0 LOG_ERROR
+#endif
+
 // LOG_DFATAL is LOG_FATAL in debug mode, ERROR in normal mode
 #ifdef NDEBUG
 const LogSeverity LOG_DFATAL = LOG_ERROR;
diff --git a/lib/ui/painting/codec.cc b/lib/ui/painting/codec.cc
index 7287966c6b122..3262338d5563c 100644
--- a/lib/ui/painting/codec.cc
+++ b/lib/ui/painting/codec.cc
@@ -17,10 +17,6 @@
 #include "third_party/tonic/logging/dart_invoke.h"
 #include "third_party/tonic/typed_data/uint8_list.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 using tonic::DartInvoke;
 using tonic::DartPersistentValue;
 using tonic::ToDart;
diff --git a/lib/ui/painting/image_encoding.cc b/lib/ui/painting/image_encoding.cc
index b689269cf492b..be8b3f7e47b68 100644
--- a/lib/ui/painting/image_encoding.cc
+++ b/lib/ui/painting/image_encoding.cc
@@ -25,10 +25,6 @@ using tonic::DartInvoke;
 using tonic::DartPersistentValue;
 using tonic::ToDart;
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace blink {
 namespace {
 
diff --git a/runtime/dart_isolate.cc b/runtime/dart_isolate.cc
index 784f650f6fdb0..4eef86398afc7 100644
--- a/runtime/dart_isolate.cc
+++ b/runtime/dart_isolate.cc
@@ -26,10 +26,6 @@
 #include "third_party/tonic/scopes/dart_api_scope.h"
 #include "third_party/tonic/scopes/dart_isolate_scope.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace blink {
 
 std::weak_ptr<DartIsolate> DartIsolate::CreateRootIsolate(
diff --git a/runtime/dart_vm.cc b/runtime/dart_vm.cc
index 35bc542432411..c7b9b97110b8f 100644
--- a/runtime/dart_vm.cc
+++ b/runtime/dart_vm.cc
@@ -33,10 +33,6 @@
 #include "third_party/tonic/scopes/dart_api_scope.h"
 #include "third_party/tonic/typed_data/uint8_list.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace dart {
 namespace observatory {
 
diff --git a/runtime/runtime_controller.cc b/runtime/runtime_controller.cc
index ace1b9b7a2183..ffc544aa10329 100644
--- a/runtime/runtime_controller.cc
+++ b/runtime/runtime_controller.cc
@@ -12,10 +12,6 @@
 #include "flutter/runtime/runtime_delegate.h"
 #include "third_party/tonic/dart_message_handler.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace blink {
 
 RuntimeController::RuntimeController(
diff --git a/shell/common/engine.cc b/shell/common/engine.cc
index f6f1553652b61..7b830a5616498 100644
--- a/shell/common/engine.cc
+++ b/shell/common/engine.cc
@@ -26,10 +26,6 @@
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace shell {
 
 static constexpr char kAssetChannel[] = "flutter/assets";
diff --git a/shell/common/isolate_configuration.cc b/shell/common/isolate_configuration.cc
index c3bbc04c653a2..2d2323199128b 100644
--- a/shell/common/isolate_configuration.cc
+++ b/shell/common/isolate_configuration.cc
@@ -7,10 +7,6 @@
 #include "flutter/fml/make_copyable.h"
 #include "flutter/runtime/dart_vm.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace shell {
 
 IsolateConfiguration::IsolateConfiguration() = default;
diff --git a/shell/common/rasterizer.cc b/shell/common/rasterizer.cc
index 47fcdf024760c..e393959bc990a 100644
--- a/shell/common/rasterizer.cc
+++ b/shell/common/rasterizer.cc
@@ -14,10 +14,6 @@
 #include "third_party/skia/include/core/SkSurfaceCharacterization.h"
 #include "third_party/skia/include/utils/SkBase64.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace shell {
 
 Rasterizer::Rasterizer(blink::TaskRunners task_runners)
diff --git a/shell/common/shell.cc b/shell/common/shell.cc
index 178f81488a184..7fad4aef95d0e 100644
--- a/shell/common/shell.cc
+++ b/shell/common/shell.cc
@@ -31,10 +31,6 @@
 #include "third_party/skia/include/core/SkGraphics.h"
 #include "third_party/tonic/common/log.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace shell {
 
 std::unique_ptr<Shell> Shell::CreateShellOnPlatformThread(
diff --git a/shell/gpu/gpu_surface_gl.cc b/shell/gpu/gpu_surface_gl.cc
index 4a421b9dae38b..7cc8892f88ef4 100644
--- a/shell/gpu/gpu_surface_gl.cc
+++ b/shell/gpu/gpu_surface_gl.cc
@@ -24,10 +24,6 @@
 #define GPU_GL_RGB565 0x8D62
 #define GPU_GL_VERSION 0x1F02
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace shell {
 
 // Default maximum number of budgeted resources in the cache.
diff --git a/shell/platform/embedder/embedder_engine.cc b/shell/platform/embedder/embedder_engine.cc
index 1f4dc3402b72c..8c701c99bae00 100644
--- a/shell/platform/embedder/embedder_engine.cc
+++ b/shell/platform/embedder/embedder_engine.cc
@@ -6,10 +6,6 @@
 
 #include "flutter/fml/make_copyable.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace shell {
 
 EmbedderEngine::EmbedderEngine(
diff --git a/shell/platform/embedder/embedder_surface_gl.cc b/shell/platform/embedder/embedder_surface_gl.cc
index 1ee37c0615564..c54978e22f37e 100644
--- a/shell/platform/embedder/embedder_surface_gl.cc
+++ b/shell/platform/embedder/embedder_surface_gl.cc
@@ -6,10 +6,6 @@
 
 #include "flutter/shell/common/io_manager.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace shell {
 
 EmbedderSurfaceGL::EmbedderSurfaceGL(GLDispatchTable gl_dispatch_table,
diff --git a/shell/platform/embedder/embedder_surface_software.cc b/shell/platform/embedder/embedder_surface_software.cc
index 103257745b359..edc855b276116 100644
--- a/shell/platform/embedder/embedder_surface_software.cc
+++ b/shell/platform/embedder/embedder_surface_software.cc
@@ -7,10 +7,6 @@
 #include "flutter/fml/trace_event.h"
 #include "third_party/skia/include/gpu/GrContext.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace shell {
 
 EmbedderSurfaceSoftware::EmbedderSurfaceSoftware(
diff --git a/shell/platform/embedder/platform_view_embedder.cc b/shell/platform/embedder/platform_view_embedder.cc
index 07f6c8dc1ff95..47b83813d974b 100644
--- a/shell/platform/embedder/platform_view_embedder.cc
+++ b/shell/platform/embedder/platform_view_embedder.cc
@@ -4,10 +4,6 @@
 
 #include "flutter/shell/platform/embedder/platform_view_embedder.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace shell {
 
 PlatformViewEmbedder::PlatformViewEmbedder(
diff --git a/shell/testing/tester_main.cc b/shell/testing/tester_main.cc
index f8c72fad41845..4fcf7ed7f8b1c 100644
--- a/shell/testing/tester_main.cc
+++ b/shell/testing/tester_main.cc
@@ -21,10 +21,6 @@
 #include "flutter/shell/common/thread_host.h"
 #include "third_party/dart/runtime/include/bin/dart_io_api.h"
 
-#ifdef ERROR
-#undef ERROR
-#endif
-
 namespace shell {
 
 // Checks whether the engine's main Dart isolate has no pending work.  If so,