diff --git a/library/md4.c b/library/md4.c
index 11a77e3..2a2082e 100644
--- a/library/md4.c
+++ b/library/md4.c
@@ -362,12 +362,12 @@
              strlen( md4_test_str[i] ), md4sum );
 
         if( memcmp( md4sum, md4_test_sum[i], 16 ) != 0 )
-        {
+        { // LCOV_EXCL_START
             if( verbose != 0 )
                 mbedtls_printf( "failed\n" );
 
             return( 1 );
-        }
+        } // LCOV_EXCL_STOP
 
         if( verbose != 0 )
             mbedtls_printf( "passed\n" );