diff --git a/CMake/external_fastdds.cmake b/CMake/external_fastdds.cmake
index 49acaa2a93..46d415c8ea 100644
--- a/CMake/external_fastdds.cmake
+++ b/CMake/external_fastdds.cmake
@@ -33,6 +33,8 @@ function(get_fastdds)
     set(SQLITE3_SUPPORT OFF CACHE INTERNAL "" FORCE)
     #set(ENABLE_OLD_LOG_MACROS OFF CACHE INTERNAL "" FORCE)  doesn't work
     set(FASTDDS_STATISTICS OFF CACHE INTERNAL "" FORCE)
+    # Enforce NO_TLS to disable SSL: if OpenSSL is found, it will be linked to, and we don't want it!
+    set(NO_TLS ON CACHE INTERNAL "" FORCE)
 
     # Set special values for FastDDS sub directory
     set(BUILD_SHARED_LIBS OFF)