diff --git a/src/IO/ReadHelpers.h b/src/IO/ReadHelpers.h
index 05198361ca2..77e1310aa7a 100644
--- a/src/IO/ReadHelpers.h
+++ b/src/IO/ReadHelpers.h
@@ -470,13 +470,15 @@ ReturnType readIntTextImpl(T & x, ReadBuffer & buf)
     }
 
 end:
-    if (has_sign && !has_number)
+    if (!has_number)
     {
-        if constexpr (throw_exception)
+        if constexpr (!throw_exception)
+            return ReturnType(false);
+        if (has_sign)
             throw Exception(ErrorCodes::CANNOT_PARSE_NUMBER,
                 "Cannot parse number with a sign character but without any numeric character");
-        else
-            return ReturnType(false);
+        throw Exception(ErrorCodes::CANNOT_PARSE_NUMBER,
+                "Cannot parse number without any numeric character");
     }
     x = res;
     if constexpr (is_signed_v<T>)