1 files changed, 1 insertions, 1 deletions

diff --git a/types.h b/types.h
index 9bc8111..f850967 100644
--- a/types.h
+++ b/types.h
@@ -33,7 +33,7 @@ class UnsupportedCPU : public std::exception {
     }
 };
 
-typedef unsigned int Index;
+typedef std::size_t Index;
 
 // If you want to detect the CPU and dispatch yourself, here's what to use:
 enum class CPUType {