diff --git a/src/Core/AccurateComparison.h b/src/Core/AccurateComparison.h
index 23d0dce6565..085c535a214 100644
--- a/src/Core/AccurateComparison.h
+++ b/src/Core/AccurateComparison.h
@@ -274,12 +274,14 @@ inline bool greaterOp<DB::UInt64, DB::Float32>(DB::UInt64 u, DB::Float32 f)
 template <>
 inline bool greaterOp<DB::Float64, DB::UInt128>(DB::Float64 f, DB::UInt128 u)
 {
+    /// TODO: This is wrong.
     return u.low == 0 && greaterOp(f, u.high);
 }
 
 template <>
 inline bool greaterOp<DB::UInt128, DB::Float64>(DB::UInt128 u, DB::Float64 f)
 {
+    /// TODO: This is wrong.
     return u.low != 0 || greaterOp(u.high, f);
 }
 
@@ -360,6 +362,7 @@ inline bool NO_SANITIZE_UNDEFINED equalsOp<DB::Int64, DB::Float32>(DB::Int64 u,
 template <>
 inline bool NO_SANITIZE_UNDEFINED equalsOp<DB::UInt128, DB::Float64>(DB::UInt128 u, DB::Float64 f)
 {
+    /// TODO: This is wrong.
     return u.low == 0 && equalsOp(static_cast<UInt64>(u.high), f);
 }