1 files changed, 1 insertions, 1 deletions

diff --git a/types.h b/types.h
index 9f40fcb..c3742b7 100644
--- a/types.h
+++ b/types.h
@@ -34,7 +34,7 @@ class UnsupportedCPU : public std::exception {
     }
 };
 
-typedef std::size_t Index;
+typedef unsigned int Index;
 
 // If you want to detect the CPU and dispatch yourself, here's what to use:
 enum class CPUType {