diff --git a/library/aria.c b/library/aria.c
index bc05c4a..43ca762 100644
--- a/library/aria.c
+++ b/library/aria.c
@@ -895,15 +895,17 @@
 };
 #endif /* MBEDTLS_CIPHER_MODE_CFB */
 
-#define ARIA_SELF_TEST_IF_FAIL              \
-        {                                   \
-            if( verbose )                   \
-                mbedtls_printf( "failed\n" );       \
-            goto exit;                              \
-        } else {                            \
-            if( verbose )                   \
-                mbedtls_printf( "passed\n" );       \
-        }
+#define ARIA_SELF_TEST_IF_FAIL( cond )                  \
+        do {                                            \
+            if( cond ) {                                \
+                if( verbose )                           \
+                    mbedtls_printf( "failed\n" );       \
+                goto exit;                              \
+            } else {                                    \
+                if( verbose )                           \
+                    mbedtls_printf( "passed\n" );       \
+            }                                           \
+        } while( 0 )
 
 /*
  * Checkup routine
@@ -937,16 +939,18 @@
             mbedtls_printf( "  ARIA-ECB-%d (enc): ", 128 + 64 * i );
         mbedtls_aria_setkey_enc( &ctx, aria_test1_ecb_key, 128 + 64 * i );
         mbedtls_aria_crypt_ecb( &ctx, aria_test1_ecb_pt, blk );
-        if( memcmp( blk, aria_test1_ecb_ct[i], MBEDTLS_ARIA_BLOCKSIZE ) != 0 )
-            ARIA_SELF_TEST_IF_FAIL;
+        ARIA_SELF_TEST_IF_FAIL(
+                memcmp( blk, aria_test1_ecb_ct[i], MBEDTLS_ARIA_BLOCKSIZE )
+                != 0 );
 
         /* test ECB decryption */
         if( verbose )
             mbedtls_printf( "  ARIA-ECB-%d (dec): ", 128 + 64 * i );
         mbedtls_aria_setkey_dec( &ctx, aria_test1_ecb_key, 128 + 64 * i );
         mbedtls_aria_crypt_ecb( &ctx, aria_test1_ecb_ct[i], blk );
-        if( memcmp( blk, aria_test1_ecb_pt, MBEDTLS_ARIA_BLOCKSIZE ) != 0 )
-            ARIA_SELF_TEST_IF_FAIL;
+        ARIA_SELF_TEST_IF_FAIL(
+                memcmp( blk, aria_test1_ecb_pt, MBEDTLS_ARIA_BLOCKSIZE )
+                != 0 );
     }
     if( verbose )
         mbedtls_printf( "\n" );
@@ -965,8 +969,8 @@
         memset( buf, 0x55, sizeof( buf ) );
         mbedtls_aria_crypt_cbc( &ctx, MBEDTLS_ARIA_ENCRYPT, 48, iv,
             aria_test2_pt, buf );
-        if( memcmp( buf, aria_test2_cbc_ct[i], 48 ) != 0 )
-            ARIA_SELF_TEST_IF_FAIL;
+        ARIA_SELF_TEST_IF_FAIL( memcmp( buf, aria_test2_cbc_ct[i], 48 )
+                != 0 );
 
         /* Test CBC decryption */
         if( verbose )
@@ -976,8 +980,7 @@
         memset( buf, 0xAA, sizeof( buf ) );
         mbedtls_aria_crypt_cbc( &ctx, MBEDTLS_ARIA_DECRYPT, 48, iv,
             aria_test2_cbc_ct[i], buf );
-        if( memcmp( buf, aria_test2_pt, 48 ) != 0 )
-            ARIA_SELF_TEST_IF_FAIL;
+        ARIA_SELF_TEST_IF_FAIL( memcmp( buf, aria_test2_pt, 48 ) != 0 );
     }
     if( verbose )
         mbedtls_printf( "\n" );
@@ -996,8 +999,7 @@
         j = 0;
         mbedtls_aria_crypt_cfb128( &ctx, MBEDTLS_ARIA_ENCRYPT, 48, &j, iv,
             aria_test2_pt, buf );
-        if( memcmp( buf, aria_test2_cfb_ct[i], 48 ) != 0 )
-            ARIA_SELF_TEST_IF_FAIL;
+        ARIA_SELF_TEST_IF_FAIL( memcmp( buf, aria_test2_cfb_ct[i], 48 ) != 0 );
 
         /* Test CFB decryption */
         if( verbose )
@@ -1008,8 +1010,7 @@
         j = 0;
         mbedtls_aria_crypt_cfb128( &ctx, MBEDTLS_ARIA_DECRYPT, 48, &j,
             iv, aria_test2_cfb_ct[i], buf );
-        if( memcmp( buf, aria_test2_pt, 48 ) != 0 )
-            ARIA_SELF_TEST_IF_FAIL;
+        ARIA_SELF_TEST_IF_FAIL( memcmp( buf, aria_test2_pt, 48 ) != 0 );
     }
     if( verbose )
         mbedtls_printf( "\n" );
@@ -1027,8 +1028,7 @@
         j = 0;
         mbedtls_aria_crypt_ctr( &ctx, 48, &j, iv, blk,
             aria_test2_pt, buf );
-        if( memcmp( buf, aria_test2_ctr_ct[i], 48 ) != 0 )
-            ARIA_SELF_TEST_IF_FAIL;
+        ARIA_SELF_TEST_IF_FAIL( memcmp( buf, aria_test2_ctr_ct[i], 48 ) != 0 );
 
         /* Test CTR decryption */
         if( verbose )
@@ -1039,8 +1039,7 @@
         j = 0;
         mbedtls_aria_crypt_ctr( &ctx, 48, &j, iv, blk,
             aria_test2_ctr_ct[i], buf );
-        if( memcmp( buf, aria_test2_pt, 48 ) != 0 )
-            ARIA_SELF_TEST_IF_FAIL;
+        ARIA_SELF_TEST_IF_FAIL( memcmp( buf, aria_test2_pt, 48 ) != 0 );
     }
     if( verbose )
         mbedtls_printf( "\n" );