diff --git a/lldb/include/lldb/Utility/UUID.h b/lldb/include/lldb/Utility/UUID.h
index 6313025dec15..5e64e9079789 100644
--- a/lldb/include/lldb/Utility/UUID.h
+++ b/lldb/include/lldb/Utility/UUID.h
@@ -46,7 +46,7 @@ public:
 
   const void *GetBytes() const;
 
-  size_t GetByteSize();
+  size_t GetByteSize() const;
 
   bool IsValid() const;
 
diff --git a/lldb/source/Utility/UUID.cpp b/lldb/source/Utility/UUID.cpp
index edad98e2f20b..1b5d24a1f8f8 100644
--- a/lldb/source/Utility/UUID.cpp
+++ b/lldb/source/Utility/UUID.cpp
@@ -109,7 +109,7 @@ bool UUID::SetBytes(const void *uuid_bytes, uint32_t num_uuid_bytes) {
   return false;
 }
 
-size_t UUID::GetByteSize() { return m_num_uuid_bytes; }
+size_t UUID::GetByteSize() const { return m_num_uuid_bytes; }
 
 bool UUID::IsValid() const {
   return m_uuid[0] || m_uuid[1] || m_uuid[2] || m_uuid[3] || m_uuid[4] ||