diff --git a/examples/C++/DDS/DeadlineQoSExample/CMakeLists.txt b/examples/C++/DDS/DeadlineQoSExample/CMakeLists.txt
index df93ad6258e..e1ce5279f6f 100644
--- a/examples/C++/DDS/DeadlineQoSExample/CMakeLists.txt
+++ b/examples/C++/DDS/DeadlineQoSExample/CMakeLists.txt
@@ -59,7 +59,7 @@ target_compile_definitions(DDSDeadlineQoSExample PRIVATE
     )
 target_include_directories(DDSDeadlineQoSExample PRIVATE ${Asio_INCLUDE_DIR})
 target_link_libraries(DDSDeadlineQoSExample fastrtps fastcdr foonathan_memory)
-if(UNIX)
+if(UNIX AND NOT(QNXNTO))
   target_link_libraries(DDSDeadlineQoSExample pthread)
 endif()
 
diff --git a/examples/C++/DeadlineQoSExample/CMakeLists.txt b/examples/C++/DeadlineQoSExample/CMakeLists.txt
index 2e6e92494d5..1325274467f 100644
--- a/examples/C++/DeadlineQoSExample/CMakeLists.txt
+++ b/examples/C++/DeadlineQoSExample/CMakeLists.txt
@@ -59,7 +59,7 @@ target_compile_definitions(DeadlineQoSExample PRIVATE
 )
 target_include_directories(DeadlineQoSExample PRIVATE ${Asio_INCLUDE_DIR})
 target_link_libraries(DeadlineQoSExample fastrtps fastcdr foonathan_memory)
-if(UNIX)
+if(UNIX AND NOT(QNXNTO))
   target_link_libraries(DeadlineQoSExample pthread)
 endif()