diff --git a/src/meson.build b/src/meson.build
index 411f14f2..ddb18811 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -21,6 +21,7 @@ kiwix_sources = [
   'tools/otherTools.cpp',
   'kiwixserve.cpp',
   'name_mapper.cpp',
+  'server/byte_range.cpp',
   'server/etag.cpp',
   'server/request_context.cpp',
   'server/response.cpp'
diff --git a/src/server/byte_range.cpp b/src/server/byte_range.cpp
new file mode 100644
index 00000000..5b3c98b2
--- /dev/null
+++ b/src/server/byte_range.cpp
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2020 Veloman Yunkan <veloman.yunkan@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU  General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+
+#include "byte_range.h"
+
+namespace kiwix {
+
+ByteRange::ByteRange()
+  : kind_(NONE)
+  , first_(0)
+  , last_(-1)
+{}
+
+ByteRange::ByteRange(Kind kind, int64_t first, int64_t last)
+  : kind_(kind)
+  , first_(first)
+  , last_(last)
+{}
+
+} // namespace kiwix
diff --git a/src/server/byte_range.h b/src/server/byte_range.h
index b9719d8b..4df6bd93 100644
--- a/src/server/byte_range.h
+++ b/src/server/byte_range.h
@@ -21,6 +21,8 @@
 #ifndef KIWIXLIB_SERVER_BYTE_RANGE_H
 #define KIWIXLIB_SERVER_BYTE_RANGE_H
 
+#include <cstdint>
+
 namespace kiwix {
 
 class ByteRange
@@ -41,13 +43,8 @@ class ByteRange
     };
 
   public: // functions
-    ByteRange() : kind_(NONE), first_(0), last_(-1) {}
-
-    ByteRange(Kind kind, int64_t first, int64_t last)
-      : kind_(kind)
-      , first_(first)
-      , last_(last)
-    {}
+    ByteRange();
+    ByteRange(Kind kind, int64_t first, int64_t last);
 
     Kind kind() const { return kind_; }
     int64_t first() const { return first_; }