diff --git a/Source/Core/Common/NandPaths.cpp b/Source/Core/Common/NandPaths.cpp
index e6f2d2a88b..5e6aa57d70 100644
--- a/Source/Core/Common/NandPaths.cpp
+++ b/Source/Core/Common/NandPaths.cpp
@@ -5,7 +5,6 @@
 
 #include <algorithm>
 #include <string>
-#include <unordered_set>
 #include <vector>
 
 #include <fmt/format.h>
@@ -105,9 +104,9 @@ bool IsTitlePath(const std::string& path, std::optional<FromWhichRoot> from, u64
 
 static bool IsIllegalCharacter(char c)
 {
-  static const std::unordered_set<char> illegal_chars = {'\"', '*', '/',  ':', '<',
-                                                         '>',  '?', '\\', '|', '\x7f'};
-  return static_cast<unsigned char>(c) <= 0x1F || illegal_chars.find(c) != illegal_chars.end();
+  static constexpr auto illegal_chars = {'\"', '*', '/', ':', '<', '>', '?', '\\', '|', '\x7f'};
+  return static_cast<unsigned char>(c) <= 0x1F ||
+         std::find(illegal_chars.begin(), illegal_chars.end(), c) != illegal_chars.end();
 }
 
 std::string EscapeFileName(const std::string& filename)