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-rw-r--r--src/libutil/hash.hh2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libutil/hash.hh b/src/libutil/hash.hh
index 8bd7e9f17f4f..bac2ebf2dcfa 100644
--- a/src/libutil/hash.hh
+++ b/src/libutil/hash.hh
@@ -7,7 +7,7 @@
 namespace nix {
 
 
-typedef enum { htUnknown, htMD5, htSHA1, htSHA256, htSHA512 } HashType;
+enum HashType : char { htUnknown, htMD5, htSHA1, htSHA256, htSHA512 };
 
 
 const int md5HashSize = 16;