diff --git a/doc/langref.html.in b/doc/langref.html.in
index f820a05b698f777db5d1b79c642b452057f89825..c1a6160e04c39d5373ed7f15174407768b2976f8 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -5313,7 +5313,7 @@ comptime {
       {#header_close#}
 
       {#header_open|@bswap#}
-      <pre>{#syntax#}@swap(comptime T: type, value: T) T{#endsyntax#}</pre>
+      <pre>{#syntax#}@bswap(comptime T: type, value: T) T{#endsyntax#}</pre>
       <p>{#syntax#}T{#endsyntax#} must be an integer type with bit count evenly divisible by 8.</p>
       <p>
       Swaps the byte order of the integer. This converts a big endian integer to a little endian integer,
diff --git a/std/io.zig b/std/io.zig
index 444219171779b0033aad6a091c1291068f80a53e..8d33dfc5ea0240f922ecb377fa866662b526d6da 100644
--- a/std/io.zig
+++ b/std/io.zig
@@ -186,7 +186,7 @@ pub fn InStream(comptime ReadError: type) type {
         pub fn readVarInt(self: *Self, comptime T: type, endian: builtin.Endian, size: usize) !T {
             assert(size <= @sizeOf(T));
             var bytes: [@sizeOf(T)]u8 = undefined;
-            try self.readNoEof(bytes[0..]);
+            try self.readNoEof(bytes[0..size]);
             return mem.readIntSlice(T, bytes, endian);
         }