diff --git a/postgrest/base_request_builder.py b/postgrest/base_request_builder.py
index 08679449..62cd57c9 100644
--- a/postgrest/base_request_builder.py
+++ b/postgrest/base_request_builder.py
@@ -35,7 +35,13 @@
     from pydantic import validator as field_validator
 
 from .types import CountMethod, Filters, RequestMethod, ReturnMethod
-from .utils import AsyncClient, SyncClient, get_origin_and_cast, sanitize_param
+from .utils import (
+    AsyncClient,
+    SyncClient,
+    get_origin_and_cast,
+    sanitize_param,
+    sanitize_pattern_param,
+)
 
 
 class QueryArgs(NamedTuple):
@@ -341,6 +347,7 @@ def like(self: Self, column: str, pattern: str) -> Self:
             column: The name of the column to apply a filter on
             pattern: The pattern to filter by
         """
+        pattern = sanitize_pattern_param(pattern)
         return self.filter(column, Filters.LIKE, pattern)
 
     def like_all_of(self: Self, column: str, pattern: str) -> Self:
@@ -390,6 +397,7 @@ def ilike(self: Self, column: str, pattern: str) -> Self:
             column: The name of the column to apply a filter on
             pattern: The pattern to filter by
         """
+        pattern = sanitize_pattern_param(pattern)
         return self.filter(column, Filters.ILIKE, pattern)
 
     def or_(self: Self, filters: str, reference_table: Union[str, None] = None) -> Self:
diff --git a/tests/_async/test_filter_request_builder.py b/tests/_async/test_filter_request_builder.py
index 1deeeba2..1be041cf 100644
--- a/tests/_async/test_filter_request_builder.py
+++ b/tests/_async/test_filter_request_builder.py
@@ -190,13 +190,25 @@ def test_overlaps_with_timestamp_range(filter_request_builder):
 def test_like(filter_request_builder):
     builder = filter_request_builder.like("x", "%a%")
 
-    assert str(builder.params) == "x=like.%a%"
+    assert str(builder.params) == "x=like.%2Aa%2A"
+
+
+def test_like2(filter_request_builder):
+    builder = filter_request_builder.like("x", f"%{85770204020}%")  # See bug #830.
+
+    assert str(builder.params) == "x=like.%2A85770204020%2A"
 
 
 def test_ilike(filter_request_builder):
     builder = filter_request_builder.ilike("x", "%a%")
 
-    assert str(builder.params) == "x=ilike.%a%"
+    assert str(builder.params) == "x=ilike.%2Aa%2A"
+
+
+def test_ilike2(filter_request_builder):
+    builder = filter_request_builder.ilike("x", f"%{85770204020}%")  # See bug #830.
+
+    assert str(builder.params) == "x=ilike.%2A85770204020%2A"
 
 
 def test_like_all_of(filter_request_builder):
diff --git a/tests/_sync/test_filter_request_builder.py b/tests/_sync/test_filter_request_builder.py
index 37434cf8..cc50d66c 100644
--- a/tests/_sync/test_filter_request_builder.py
+++ b/tests/_sync/test_filter_request_builder.py
@@ -190,13 +190,25 @@ def test_overlaps_with_timestamp_range(filter_request_builder):
 def test_like(filter_request_builder):
     builder = filter_request_builder.like("x", "%a%")
 
-    assert str(builder.params) == "x=like.%a%"
+    assert str(builder.params) == "x=like.%2Aa%2A"
+
+
+def test_like2(filter_request_builder):
+    builder = filter_request_builder.like("x", f"%{85770204020}%")  # See bug #830.
+
+    assert str(builder.params) == "x=like.%2A85770204020%2A"
 
 
 def test_ilike(filter_request_builder):
     builder = filter_request_builder.ilike("x", "%a%")
 
-    assert str(builder.params) == "x=ilike.%a%"
+    assert str(builder.params) == "x=ilike.%2Aa%2A"
+
+
+def test_ilike2(filter_request_builder):
+    builder = filter_request_builder.ilike("x", f"%{85770204020}%")  # See bug #830.
+
+    assert str(builder.params) == "x=ilike.%2A85770204020%2A"
 
 
 def test_like_all_of(filter_request_builder):