diff --git a/Source/WTF/wtf/PlatformEnableCocoa.h b/Source/WTF/wtf/PlatformEnableCocoa.h
index 3936b9291446..a69e19f17edb 100644
--- a/Source/WTF/wtf/PlatformEnableCocoa.h
+++ b/Source/WTF/wtf/PlatformEnableCocoa.h
@@ -481,6 +481,11 @@
 #define ENABLE_POINTER_LOCK 0
 #endif
 
+
+#if !defined(ENABLE_POST_EDITING_GRAMMAR_CHECKING) && ((PLATFORM(MAC) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 130000) || (PLATFORM(IOS) && __IPHONE_OS_VERSION_MIN_REQUIRED >= 160000))
+#define ENABLE_POST_EDITING_GRAMMAR_CHECKING 1
+#endif
+
 #if !defined(ENABLE_PREVIEW_CONVERTER) && PLATFORM(IOS)
 #define ENABLE_PREVIEW_CONVERTER 1
 #endif
diff --git a/Source/WebCore/editing/Editor.cpp b/Source/WebCore/editing/Editor.cpp
index 8a9287257741..c612448ae89a 100644
--- a/Source/WebCore/editing/Editor.cpp
+++ b/Source/WebCore/editing/Editor.cpp
@@ -2546,7 +2546,7 @@ void Editor::markMisspellingsAfterTypingToWord(const VisiblePosition& wordStart,
     auto adjacentWords = VisibleSelection(startOfWord(wordStart, LeftWordIfOnBoundary), endOfWord(wordStart, RightWordIfOnBoundary));
     auto adjacentWordRange = adjacentWords.toNormalizedRange();
 
-#if ENABLE(MAC_CATALYST_GRAMMAR_CHECKING)
+#if ENABLE(POST_EDITING_GRAMMAR_CHECKING)
     if (isGrammarCheckingEnabled()) {
         textCheckingOptions.add(TextCheckingType::Grammar);
         textCheckingOptions.add(TextCheckingType::Correction);
@@ -2879,7 +2879,7 @@ void Editor::markAndReplaceFor(const SpellCheckRequest& request, const Vector<Te
 
         bool resultRangeIsAcceptableForReplacement = automaticReplacementStartLocation <= resultEndLocation && resultEndLocation <= automaticReplacementEndLocation;
         // In this case the result range just has to touch the automatic replacement range, so we can handle replacing non-word text such as punctuation.
-#if ENABLE(MAC_CATALYST_GRAMMAR_CHECKING)
+#if ENABLE(POST_EDITING_GRAMMAR_CHECKING)
         if (!resultRangeIsAcceptableForReplacement && shouldCheckForCorrection && resultType == TextCheckingType::Correction)
             resultRangeIsAcceptableForReplacement = results[i].details.size() > 0;
         if (!resultRangeIsAcceptableForReplacement && shouldMarkGrammar && shouldCheckForCorrection && resultType == TextCheckingType::Correction) {
@@ -2934,7 +2934,7 @@ void Editor::markAndReplaceFor(const SpellCheckRequest& request, const Vector<Te
 
             String replacedString = plainText(rangeToReplace);
             bool existingMarkersPermitReplacement = m_alternativeTextController->processMarkersOnTextToBeReplacedByResult(results[i], rangeToReplace, replacedString);
-#if ENABLE(MAC_CATALYST_GRAMMAR_CHECKING)
+#if ENABLE(POST_EDITING_GRAMMAR_CHECKING)
             if (!existingMarkersPermitReplacement && shouldCheckForCorrection && resultType == TextCheckingType::Correction)
                 existingMarkersPermitReplacement = results[i].details.size() > 0;
 #endif
diff --git a/Source/WebCore/platform/graphics/cocoa/GraphicsContextCocoa.mm b/Source/WebCore/platform/graphics/cocoa/GraphicsContextCocoa.mm
index e3ac16b3b48a..b80c223e9420 100644
--- a/Source/WebCore/platform/graphics/cocoa/GraphicsContextCocoa.mm
+++ b/Source/WebCore/platform/graphics/cocoa/GraphicsContextCocoa.mm
@@ -63,7 +63,7 @@
 
 static RetainPtr<CGColorRef> grammarColor(bool useDarkMode)
 {
-#if ENABLE(MAC_CATALYST_GRAMMAR_CHECKING)
+#if ENABLE(POST_EDITING_GRAMMAR_CHECKING)
     static bool useBlueForGrammar = false;
     static std::once_flag flag;
     std::call_once(flag, [] {
diff --git a/Source/WebKit/Platform/spi/ios/UIKitSPI.h b/Source/WebKit/Platform/spi/ios/UIKitSPI.h
index aebd53894ec6..0602b36a26f6 100644
--- a/Source/WebKit/Platform/spi/ios/UIKitSPI.h
+++ b/Source/WebKit/Platform/spi/ios/UIKitSPI.h
@@ -1545,7 +1545,7 @@ typedef NS_ENUM(NSUInteger, _UIContextMenuLayout) {
 @end
 #endif
 
-#if ENABLE(MAC_CATALYST_GRAMMAR_CHECKING)
+#if ENABLE(POST_EDITING_GRAMMAR_CHECKING)
 @interface UITextChecker ()
 + (BOOL)grammarCheckingEnabled;
 - (NSArray<NSTextCheckingResult *> *)checkString:(NSString *)stringToCheck range:(NSRange)range types:(NSTextCheckingTypes)checkingTypes languages:(NSArray<NSString *> *)languagesArray options:(NSDictionary<NSString *, id> *)options;
diff --git a/Source/WebKit/UIProcess/ios/TextCheckerIOS.mm b/Source/WebKit/UIProcess/ios/TextCheckerIOS.mm
index 2ab40e06b8a9..be28327f8e06 100644
--- a/Source/WebKit/UIProcess/ios/TextCheckerIOS.mm
+++ b/Source/WebKit/UIProcess/ios/TextCheckerIOS.mm
@@ -46,7 +46,7 @@
     static NeverDestroyed state = [] {
         TextCheckerState initialState;
         initialState.isContinuousSpellCheckingEnabled = TextChecker::isContinuousSpellCheckingAllowed();
-#if ENABLE(MAC_CATALYST_GRAMMAR_CHECKING)
+#if ENABLE(POST_EDITING_GRAMMAR_CHECKING)
         initialState.isGrammarCheckingEnabled = [UITextChecker respondsToSelector:@selector(grammarCheckingEnabled)] && [UITextChecker grammarCheckingEnabled];
 #else
         initialState.isGrammarCheckingEnabled = false;
@@ -81,7 +81,7 @@
 
 void TextChecker::setGrammarCheckingEnabled(bool isGrammarCheckingEnabled)
 {
-#if ENABLE(MAC_CATALYST_GRAMMAR_CHECKING)
+#if ENABLE(POST_EDITING_GRAMMAR_CHECKING)
     if (state().isGrammarCheckingEnabled == isGrammarCheckingEnabled)
         return;
 
@@ -222,7 +222,7 @@
     auto stringToCheck = text.createNSStringWithoutCopying();
     auto range = NSMakeRange(0, [stringToCheck length]);
 
-#if ENABLE(MAC_CATALYST_GRAMMAR_CHECKING)
+#if ENABLE(POST_EDITING_GRAMMAR_CHECKING)
     if ([textChecker respondsToSelector:@selector(checkString:range:types:languages:options:)]) {
         NSTextCheckingTypes types = 0;
         if (checkingTypes.contains(TextCheckingType::Spelling))