diff --git a/lib/std/hash_map.zig b/lib/std/hash_map.zig
index 144a512edcfc9462205374aa95d576c20333388b..458706d71fce121a38939c366cfbb8a22c3d5d87 100644
--- a/lib/std/hash_map.zig
+++ b/lib/std/hash_map.zig
@@ -113,7 +113,7 @@ pub fn HashMap(
             return self.unmanaged.clearAndFree(self.allocator);
         }
 
-        pub fn count(self: Self) usize {
+        pub fn count(self: Self) Size {
             return self.unmanaged.count();
         }