diff --git a/src/Core/Settings.h b/src/Core/Settings.h
index a3861f275a9e..4628e877a54c 100644
--- a/src/Core/Settings.h
+++ b/src/Core/Settings.h
@@ -127,7 +127,7 @@ class IColumn;
     \
     M(Bool, allow_suspicious_low_cardinality_types, false, "In CREATE TABLE statement allows specifying LowCardinality modifier for types of small fixed size (8 or less). Enabling this may increase merge times and memory consumption.", 0) \
     M(Bool, allow_suspicious_fixed_string_types, false, "In CREATE TABLE statement allows creating columns of type FixedString(n) with n > 256. FixedString with length >= 256 is suspicious and most likely indicates misusage", 0) \
-    M(Bool, compile_expressions, true, "Compile some scalar functions and operators to native code.", 0) \
+    M(Bool, compile_expressions, false, "Compile some scalar functions and operators to native code.", 0) \
     M(UInt64, min_count_to_compile_expression, 3, "The number of identical expressions before they are JIT-compiled", 0) \
     M(Bool, compile_aggregate_expressions, false, "Compile aggregate functions to native code. This feature has a bug and should not be used.", 0) \
     M(UInt64, min_count_to_compile_aggregate_expression, 3, "The number of identical aggregate expressions before they are JIT-compiled", 0) \
diff --git a/tests/clickhouse-test b/tests/clickhouse-test
index fa88bc19efd3..6b73b30fc354 100755
--- a/tests/clickhouse-test
+++ b/tests/clickhouse-test
@@ -547,7 +547,7 @@ class SettingsRandomizer:
         "remote_filesystem_read_method": lambda: random.choice(["read", "threadpool"]),
         "local_filesystem_read_prefetch": lambda: random.randint(0, 1),
         "remote_filesystem_read_prefetch": lambda: random.randint(0, 1),
-        "compile_expressions": lambda: random.randint(0, 1),
+        # "compile_expressions": lambda: random.randint(0, 1), - this setting has a bug: https://github.com/ClickHouse/ClickHouse/issues/51264
         "compile_aggregate_expressions": lambda: random.randint(0, 1),
         "compile_sort_description": lambda: random.randint(0, 1),
         "merge_tree_coarse_index_granularity": lambda: random.randint(2, 32),