diff --git a/lib/std/io.zig b/lib/std/io.zig
index 64ed9f757e..8bbc8d6150 100644
--- a/lib/std/io.zig
+++ b/lib/std/io.zig
@@ -308,7 +308,7 @@ pub fn GenericReader(
             return @errorCast(self.any().skipBytes(num_bytes, options));
         }
 
-        pub inline fn isBytes(self: Self, slice: []const u8) Error!bool {
+        pub inline fn isBytes(self: Self, slice: []const u8) NoEofError!bool {
             return @errorCast(self.any().isBytes(slice));
         }
 
@@ -320,7 +320,7 @@ pub fn GenericReader(
             return @errorCast(self.any().readStructBig(T));
         }
 
-        pub const ReadEnumError = Error || error{
+        pub const ReadEnumError = NoEofError || error{
             /// An integer was read, but it did not match any of the tags in the supplied enum.
             InvalidValue,
         };
diff --git a/lib/std/io/test.zig b/lib/std/io/test.zig
index 46c40512e2..3967469e6f 100644
--- a/lib/std/io/test.zig
+++ b/lib/std/io/test.zig
@@ -182,3 +182,16 @@ test "updateTimes" {
     try expect(stat_new.atime < stat_old.atime);
     try expect(stat_new.mtime < stat_old.mtime);
 }
+
+test "GenericReader methods can return error.EndOfStream" {
+    // https://github.com/ziglang/zig/issues/17733
+    var fbs = std.io.fixedBufferStream("");
+    try std.testing.expectError(
+        error.EndOfStream,
+        fbs.reader().readEnum(enum(u8) { a, b }, .Little),
+    );
+    try std.testing.expectError(
+        error.EndOfStream,
+        fbs.reader().isBytes("foo"),
+    );
+}