diff --git a/include/boost/pfr/core_name.hpp b/include/boost/pfr/core_name.hpp
index a4f1c65c..fad190b1 100644
--- a/include/boost/pfr/core_name.hpp
+++ b/include/boost/pfr/core_name.hpp
@@ -40,8 +40,8 @@ constexpr auto get_name() noexcept {
 template <class T>
 constexpr auto names_as_array() noexcept {
     return detail::make_stdarray_from_tietuple(
-	detail::tie_as_names_tuple<T>(),
-	detail::make_index_sequence< tuple_size_v<T> >()
+        detail::tie_as_names_tuple<T>(),
+        detail::make_index_sequence< tuple_size_v<T> >()
     );
 }
 
diff --git a/include/boost/pfr/detail/core_name14_disabled.hpp b/include/boost/pfr/detail/core_name14_disabled.hpp
index 1e6d39c5..7d1c9f31 100644
--- a/include/boost/pfr/detail/core_name14_disabled.hpp
+++ b/include/boost/pfr/detail/core_name14_disabled.hpp
@@ -28,7 +28,7 @@ template <class T>
 constexpr auto tie_as_names_tuple() noexcept {
     static_assert(
         sizeof(T) && false,
-	"====================> Boost.PFR: Extraction of field's names is allowed only in C++20"
+        "====================> Boost.PFR: Extraction of field's names is allowed only in C++20"
     );
 
     return detail::make_sequence_tuple(); 
diff --git a/include/boost/pfr/detail/core_name20_static.hpp b/include/boost/pfr/detail/core_name20_static.hpp
index 00003718..574f9616 100644
--- a/include/boost/pfr/detail/core_name20_static.hpp
+++ b/include/boost/pfr/detail/core_name20_static.hpp
@@ -67,7 +67,7 @@ constexpr auto tie_as_names_tuple() noexcept {
     );
     static_assert(
         sizeof(T) && BOOST_PFR_USE_CPP17,
-	"====================> Boost.PFR: Extraction of field's names is allowed only when the BOOST_PFR_USE_CPP17 macro enabled."
+        "====================> Boost.PFR: Extraction of field's names is allowed only when the BOOST_PFR_USE_CPP17 macro enabled."
     );
 
     return tie_as_names_tuple_impl<T>(detail::make_index_sequence<detail::fields_count<T>()>{});
diff --git a/test/config/print_config.cpp b/test/config/print_config.cpp
index 7eff103a..78e0e1b7 100644
--- a/test/config/print_config.cpp
+++ b/test/config/print_config.cpp
@@ -14,7 +14,7 @@ int main() {
         << "BOOST_PFR_USE_STD_MAKE_INTEGRAL_SEQUENCE == " << BOOST_PFR_USE_STD_MAKE_INTEGRAL_SEQUENCE << '\n'
         << "BOOST_PFR_HAS_GUARANTEED_COPY_ELISION == " << BOOST_PFR_HAS_GUARANTEED_COPY_ELISION << '\n'
         << "BOOST_PFR_ENABLE_IMPLICIT_REFLECTION == " << BOOST_PFR_ENABLE_IMPLICIT_REFLECTION << '\n'
-	<< "BOOST_PFR_ENABLE_GETTING_NAMES == " << BOOST_PFR_ENABLE_GETTING_NAMES << '\n'
+        << "BOOST_PFR_ENABLE_GETTING_NAMES == " << BOOST_PFR_ENABLE_GETTING_NAMES << '\n'
         << "BOOST_PFR_ENABLED == " << BOOST_PFR_ENABLED << '\n'
         << "__cplusplus == " << __cplusplus << '\n'
 #ifdef __cpp_structured_bindings
diff --git a/test/core_name/fields_names.cpp b/test/core_name/fields_names.cpp
index 084d43fa..30e4fe48 100644
--- a/test/core_name/fields_names.cpp
+++ b/test/core_name/fields_names.cpp
@@ -47,9 +47,9 @@ void test_get_name_by_type() {
 void test_names_as_array() {
     const auto expected = std::array<std::string_view, 4>{
         "member1",
-	"this_is_a_name",
-	"c",
-	"Forth"
+        "this_is_a_name",
+        "c",
+        "Forth"
     };
     const auto value = boost::pfr::names_as_array<Aggregate>();
     BOOST_TEST_EQ(expected.size(), value.size());
diff --git a/test/core_name/fields_names_constexpr.cpp b/test/core_name/fields_names_constexpr.cpp
index fb69ea53..8b3ebeff 100644
--- a/test/core_name/fields_names_constexpr.cpp
+++ b/test/core_name/fields_names_constexpr.cpp
@@ -30,11 +30,11 @@ static_assert(boost::pfr::get_name<2, Aggregate>() == "c");
 static_assert(boost::pfr::get_name<3, Aggregate>() == "Forth");
 
 static_assert(boost::pfr::names_as_array<Aggregate>() == std::array<std::string_view, 4>{
-		"member1",
-		"this_is_a_name",
-		"c",
-		"Forth"
-		});
+        "member1",
+        "this_is_a_name",
+        "c",
+        "Forth"
+});
 
 int main() {}