diff --git a/src/sam/metainfo.jl b/src/sam/metainfo.jl
index 0c74a90..57961c1 100644
--- a/src/sam/metainfo.jl
+++ b/src/sam/metainfo.jl
@@ -189,7 +189,7 @@ function keyvalues(metainfo::MetaInfo)::Vector{Pair{String,String}}
     if iscomment(metainfo)
         throw(ArgumentError("not a dictionary"))
     end
-    return Pair{String,String}[key => val for (key, val) in zip(keys(metainfo), values(metainfo))]
+    return Pair{String, String}.(keys(metainfo), values(metainfo))
 end
 
 function Base.keys(metainfo::MetaInfo)