diff --git a/llvm/utils/TableGen/PrinterCapstone.cpp b/llvm/utils/TableGen/PrinterCapstone.cpp
index 94e616b6e4a8..4e07af20acc7 100644
--- a/llvm/utils/TableGen/PrinterCapstone.cpp
+++ b/llvm/utils/TableGen/PrinterCapstone.cpp
@@ -2601,6 +2601,7 @@ static inline std::string normalizedMnemonic(StringRef const &Mn,
                                              const bool Upper = true) {
   auto Mnemonic = Upper ? Mn.upper() : Mn.str();
   std::replace(Mnemonic.begin(), Mnemonic.end(), '.', '_');
+  std::replace(Mnemonic.begin(), Mnemonic.end(), '|', '_');
   std::replace(Mnemonic.begin(), Mnemonic.end(), '+', 'p');
   std::replace(Mnemonic.begin(), Mnemonic.end(), '-', 'm');
   std::replace(Mnemonic.begin(), Mnemonic.end(), '/', 's');