diff --git a/layout/style/nsCSSParser.cpp b/layout/style/nsCSSParser.cpp
index b481bad14bb..395fe356052 100644
--- a/layout/style/nsCSSParser.cpp
+++ b/layout/style/nsCSSParser.cpp
@@ -14895,14 +14895,14 @@ CSSParserImpl::ParseTextAlign(nsCSSValue& aValue, const KTableEntry aTable[])
   nsCSSValue right;
   if (ParseSingleTokenVariant(right, VARIANT_KEYWORD, aTable)) {
     // 'true' must be combined with some other value than 'true'.
-    if (left.GetIntValue() == NS_STYLE_TEXT_ALIGN_TRUE &&
-        right.GetIntValue() == NS_STYLE_TEXT_ALIGN_TRUE) {
+    if (left.GetIntValue() == NS_STYLE_TEXT_ALIGN_UNSAFE &&
+        right.GetIntValue() == NS_STYLE_TEXT_ALIGN_UNSAFE) {
       return false;
     }
     aValue.SetPairValue(left, right);
   } else {
     // Single value 'true' is not allowed.
-    if (left.GetIntValue() == NS_STYLE_TEXT_ALIGN_TRUE) {
+    if (left.GetIntValue() == NS_STYLE_TEXT_ALIGN_UNSAFE) {
       return false;
     }
     aValue = left;
diff --git a/layout/style/nsCSSProps.cpp b/layout/style/nsCSSProps.cpp
index 5a0e2800231..f31d6572a8d 100644
--- a/layout/style/nsCSSProps.cpp
+++ b/layout/style/nsCSSProps.cpp
@@ -1959,7 +1959,7 @@ KTableEntry nsCSSProps::kTextAlignKTable[] = {
   { eCSSKeyword__moz_left, NS_STYLE_TEXT_ALIGN_MOZ_LEFT },
   { eCSSKeyword_start, NS_STYLE_TEXT_ALIGN_DEFAULT },
   { eCSSKeyword_end, NS_STYLE_TEXT_ALIGN_END },
-  { eCSSKeyword_unsafe, NS_STYLE_TEXT_ALIGN_TRUE },
+  { eCSSKeyword_unsafe, NS_STYLE_TEXT_ALIGN_UNSAFE },
   { eCSSKeyword_match_parent, NS_STYLE_TEXT_ALIGN_MATCH_PARENT },
   { eCSSKeyword_UNKNOWN, -1 }
 };
@@ -1972,7 +1972,7 @@ KTableEntry nsCSSProps::kTextAlignLastKTable[] = {
   { eCSSKeyword_justify, NS_STYLE_TEXT_ALIGN_JUSTIFY },
   { eCSSKeyword_start, NS_STYLE_TEXT_ALIGN_DEFAULT },
   { eCSSKeyword_end, NS_STYLE_TEXT_ALIGN_END },
-  { eCSSKeyword_unsafe, NS_STYLE_TEXT_ALIGN_TRUE },
+  { eCSSKeyword_unsafe, NS_STYLE_TEXT_ALIGN_UNSAFE },
   { eCSSKeyword_UNKNOWN, -1 }
 };
 
diff --git a/layout/style/nsRuleNode.cpp b/layout/style/nsRuleNode.cpp
index c209fa1518f..f3ef2121a98 100644
--- a/layout/style/nsRuleNode.cpp
+++ b/layout/style/nsRuleNode.cpp
@@ -4396,7 +4396,7 @@ nsRuleNode::ComputeTextData(void* aStartStruct,
       const nsCSSValuePair& textAlignValuePair = textAlignValue->GetPairValue();
       textAlignValue = &textAlignValuePair.mXValue;
       if (eCSSUnit_Enumerated == textAlignValue->GetUnit()) {
-        if (textAlignValue->GetIntValue() == NS_STYLE_TEXT_ALIGN_TRUE) {
+        if (textAlignValue->GetIntValue() == NS_STYLE_TEXT_ALIGN_UNSAFE) {
           textAlignValue = &textAlignValuePair.mYValue;
         }
       } else if (eCSSUnit_String == textAlignValue->GetUnit()) {
@@ -4421,7 +4421,7 @@ nsRuleNode::ComputeTextData(void* aStartStruct,
     const nsCSSValuePair& textAlignLastValuePair = textAlignLastValue->GetPairValue();
     textAlignLastValue = &textAlignLastValuePair.mXValue;
     if (eCSSUnit_Enumerated == textAlignLastValue->GetUnit()) {
-      if (textAlignLastValue->GetIntValue() == NS_STYLE_TEXT_ALIGN_TRUE) {
+      if (textAlignLastValue->GetIntValue() == NS_STYLE_TEXT_ALIGN_UNSAFE) {
         textAlignLastValue = &textAlignLastValuePair.mYValue;
       }
     }
diff --git a/layout/style/nsStyleConsts.h b/layout/style/nsStyleConsts.h
index ffa27adf5d5..cd9c98fc80d 100644
--- a/layout/style/nsStyleConsts.h
+++ b/layout/style/nsStyleConsts.h
@@ -809,7 +809,7 @@ enum class FillMode : uint32_t;
 // NS_STYLE_TEXT_ALIGN_MOZ_CENTER_OR_INHERIT is only used in data structs; it
 // is never present in stylesheets or computed data.
 #define NS_STYLE_TEXT_ALIGN_MOZ_CENTER_OR_INHERIT 11
-#define NS_STYLE_TEXT_ALIGN_TRUE                  12
+#define NS_STYLE_TEXT_ALIGN_UNSAFE                12
 #define NS_STYLE_TEXT_ALIGN_MATCH_PARENT          13
 // Note: make sure that the largest NS_STYLE_TEXT_ALIGN_* value is smaller than
 // the smallest NS_STYLE_VERTICAL_ALIGN_* value below!