diff --git a/CMakeLists.txt b/CMakeLists.txt
index c43a8de27ec3272d3e1f708748f99a126ce2e1f0..b20bfe5e8e84e4e8abf98c6c8fffd744f10fd45f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,6 +35,11 @@ message("Without libjpeg")
 target_compile_definitions(blc PRIVATE -DWITHOUT_JPEG)
 endif()
 
+if(UNIX AND NOT APPLE)
+	target_link_libraries(blc PRIVATE rt)
+endif()
+
+
 
 #Both version of librairies will have the same name only the extension will change.
 set_target_properties(static_blc PROPERTIES OUTPUT_NAME blc)