diff --git a/src/clang_tu.hh b/src/clang_tu.hh
index b3795092..7dbfc4a8 100644
--- a/src/clang_tu.hh
+++ b/src/clang_tu.hh
@@ -17,6 +17,10 @@ namespace vfs = clang::vfs;
 }
 #endif
 
+#if LLVM_VERSION_MAJOR < 14 // llvmorg-14-init-3863-g601102d282d5
+#define isAsciiIdentifierContinue isIdentifierBody
+#endif
+
 namespace ccls {
 std::string pathFromFileEntry(const clang::FileEntry &file);
 
diff --git a/src/indexer.cc b/src/indexer.cc
index 89d78959..644c0ccb 100644
--- a/src/indexer.cc
+++ b/src/indexer.cc
@@ -527,8 +527,8 @@ public:
     auto i = name.find(short_name);
     if (short_name.size())
       while (i != std::string::npos &&
-             ((i && isIdentifierBody(name[i - 1])) ||
-              isIdentifierBody(name[i + short_name.size()])))
+             ((i && isAsciiIdentifierContinue(name[i - 1])) ||
+              isAsciiIdentifierContinue(name[i + short_name.size()])))
         i = name.find(short_name, i + short_name.size());
     if (i == std::string::npos) {
       // e.g. operator type-parameter-1
@@ -552,7 +552,7 @@ public:
         paren++;
       else if (name[i - 1] == '(')
         paren--;
-      else if (!(paren > 0 || isIdentifierBody(name[i - 1]) ||
+      else if (!(paren > 0 || isAsciiIdentifierContinue(name[i - 1]) ||
                  name[i - 1] == ':'))
         break;
     }
diff --git a/src/working_files.cc b/src/working_files.cc
index f80f2105..4904388b 100644
--- a/src/working_files.cc
+++ b/src/working_files.cc
@@ -342,7 +342,10 @@ std::optional<int> WorkingFile::getIndexPosFromBufferPos(int line, int *column,
 Position WorkingFile::getCompletionPosition(Position pos, std::string *filter) const {
   int start = getOffsetForPosition(pos, buffer_content);
   int i = start;
-  while (i > 0 && isIdentifierBody(buffer_content[i - 1]))
+#if LLVM_VERSION_MAJOR < 14 // llvmorg-14-init-3863-g601102d282d5
+#define isAsciiIdentifierContinue isIdentifierBody
+#endif
+  while (i > 0 && isAsciiIdentifierContinue(buffer_content[i - 1]))
     --i;
   *filter = buffer_content.substr(i, start - i);
   return getPositionForOffset(buffer_content, i);
@@ -455,10 +458,10 @@ std::string_view lexIdentifierAroundPos(Position position,
     c = content[start - 1];
     if (c == ':' && start > 1 && content[start - 2] == ':')
       start--;
-    else if (!isIdentifierBody(c))
+    else if (!isAsciiIdentifierContinue(c))
       break;
   }
-  for (; end < content.size() && isIdentifierBody(content[end]); end++)
+  for (; end < content.size() && isAsciiIdentifierContinue(content[end]); end++)
     ;
 
   return content.substr(start, end - start);