diff --git a/src/modules/logger/log_writer_file.cpp b/src/modules/logger/log_writer_file.cpp
index a0ee9c6ea8..b32d5ff0ae 100644
--- a/src/modules/logger/log_writer_file.cpp
+++ b/src/modules/logger/log_writer_file.cpp
@@ -86,6 +86,7 @@ LogWriterFile::~LogWriterFile()
 bool LogWriterFile::init_logfile_encryption(const char *filename)
 {
 	if (_algorithm == CRYPTO_NONE) {
+		_min_blocksize = 1;
 		return true;
 	}