diff --git a/llvm/include/llvm/Remarks/BitstreamRemarkContainer.h b/llvm/include/llvm/Remarks/BitstreamRemarkContainer.h
index b8b130fa324d..a2282fca04ab 100644
--- a/llvm/include/llvm/Remarks/BitstreamRemarkContainer.h
+++ b/llvm/include/llvm/Remarks/BitstreamRemarkContainer.h
@@ -25,7 +25,7 @@ namespace remarks {
 /// Note: this is different from the version of the remark entry.
 constexpr uint64_t CurrentContainerVersion = 0;
 /// The magic number used for identifying remark blocks.
-constexpr StringRef ContainerMagic("RMRK", 4);
+constexpr StringLiteral ContainerMagic("RMRK");
 
 /// Type of the remark container.
 /// The remark container has two modes:
diff --git a/llvm/include/llvm/Remarks/RemarkFormat.h b/llvm/include/llvm/Remarks/RemarkFormat.h
index 3cf7279e05c7..6dd32b226099 100644
--- a/llvm/include/llvm/Remarks/RemarkFormat.h
+++ b/llvm/include/llvm/Remarks/RemarkFormat.h
@@ -19,7 +19,7 @@
 namespace llvm {
 namespace remarks {
 
-constexpr StringRef Magic("REMARKS", 7);
+constexpr StringLiteral Magic("REMARKS");
 
 /// The format used for serializing/deserializing remarks.
 enum class Format { Unknown, YAML, YAMLStrTab, Bitstream };