diff --git a/modules/matlab/CMakeLists.txt b/modules/matlab/CMakeLists.txt
index 0465b036de..756ff834e2 100644
--- a/modules/matlab/CMakeLists.txt
+++ b/modules/matlab/CMakeLists.txt
@@ -68,7 +68,6 @@ if (BUILD_TESTS)
     add_subdirectory(test)
 endif()
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include)
-add_subdirectory(io)
 
 # ----------------------------------------------------------------------------
 #  Configure time components