diff --git a/test/iteration.h b/test/iteration.h
index 7b148c5..509a03d 100644
--- a/test/iteration.h
+++ b/test/iteration.h
@@ -32,25 +32,25 @@
 # elif defined NO_FLAGS
 
 struct BOOST_PP_CAT(X, BOOST_PP_ITERATION()) {
-	BEGIN
-		BOOST_PP_ITERATION() >= BOOST_PP_ITERATION_START() &&
-		BOOST_PP_ITERATION() <= BOOST_PP_ITERATION_FINISH()
-	END
+    BEGIN
+        BOOST_PP_ITERATION() >= BOOST_PP_ITERATION_START() &&
+        BOOST_PP_ITERATION() <= BOOST_PP_ITERATION_FINISH()
+    END
 };
 
 # elif BOOST_PP_ITERATION_DEPTH() == 1 \
-	&& BOOST_PP_ITERATION_FLAGS() == 0x0001
+    && BOOST_PP_ITERATION_FLAGS() == 0x0001
 
 struct BOOST_PP_CAT(Y, BOOST_PP_ITERATION()) { };
 
 # elif BOOST_PP_ITERATION_DEPTH() == 1 \
-	&& BOOST_PP_ITERATION_FLAGS() == 0x0002
+    && BOOST_PP_ITERATION_FLAGS() == 0x0002
 
 # define BOOST_PP_ITERATION_PARAMS_2 (3, (1, BOOST_PP_ITERATION(), <libs/preprocessor/test/iteration.h>))
 # include BOOST_PP_ITERATE()
 
 # elif BOOST_PP_ITERATION_DEPTH() == 2 \
-	&& BOOST_PP_FRAME_FLAGS(1) == 0x0002
+    && BOOST_PP_FRAME_FLAGS(1) == 0x0002
 
 struct BOOST_PP_CAT(Z, BOOST_PP_CAT(BOOST_PP_ITERATION(), BOOST_PP_RELATIVE_ITERATION(1))) { };
 
diff --git a/test/repetition.cpp b/test/repetition.cpp
index 10773bd..58fd6a4 100644
--- a/test/repetition.cpp
+++ b/test/repetition.cpp
@@ -23,7 +23,7 @@
 # define NTH(z, n, data) data ## n
 
 int add(BOOST_PP_ENUM_PARAMS(MAX, int x)) {
-	return BOOST_PP_REPEAT(MAX, NTH, + x);
+    return BOOST_PP_REPEAT(MAX, NTH, + x);
 }
 
 const int r = add(BOOST_PP_ENUM_PARAMS(MAX, 1 BOOST_PP_INTERCEPT));
@@ -32,9 +32,9 @@ const int r = add(BOOST_PP_ENUM_PARAMS(MAX, 1 BOOST_PP_INTERCEPT));
 const int BOOST_PP_ENUM(MAX, CONSTANT, default_param_);
 
 # define TEST(n) \
-	void BOOST_PP_CAT(test_enum_params, n)(BOOST_PP_ENUM_PARAMS(n, int x)); \
-	void BOOST_PP_CAT(test_enum_params_with_a_default, n)(BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(n, int x, 0)); \
-	void BOOST_PP_CAT(test_enum_params_with_defaults, n)(BOOST_PP_ENUM_PARAMS_WITH_DEFAULTS(n, int x, default_param_));
+    void BOOST_PP_CAT(test_enum_params, n)(BOOST_PP_ENUM_PARAMS(n, int x)); \
+    void BOOST_PP_CAT(test_enum_params_with_a_default, n)(BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(n, int x, 0)); \
+    void BOOST_PP_CAT(test_enum_params_with_defaults, n)(BOOST_PP_ENUM_PARAMS_WITH_DEFAULTS(n, int x, default_param_));
 
 TEST(0)
 TEST(MAX)
diff --git a/test/test.h b/test/test.h
index 71bb657..9c411d1 100644
--- a/test/test.h
+++ b/test/test.h
@@ -26,8 +26,8 @@ namespace std { }
 using namespace std;
 
 int main(void) {
-	printf("pass " __TIME__);
-	return 0;
+    printf("pass " __TIME__);
+    return 0;
 }
 
 # endif