diff --git a/CMakeLists.txt b/CMakeLists.txt
index 151e760..f623951 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -66,6 +66,7 @@ set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/module)
 
 set(MODULE_USED_OBJECT_SOURCE_FILE
     ${CMAKE_SOURCE_DIR}/src/nasal_misc.cpp
+    ${CMAKE_SOURCE_DIR}/src/nasal_type.cpp
     ${CMAKE_SOURCE_DIR}/src/nasal_gc.cpp)
 add_library(module-used-object STATIC ${MODULE_USED_OBJECT_SOURCE_FILE})
 
diff --git a/src/nasal_type.cpp b/src/nasal_type.cpp
index de42e25..410300d 100644
--- a/src/nasal_type.cpp
+++ b/src/nasal_type.cpp
@@ -1,5 +1,8 @@
 #include "nasal_type.h"
 
+#include <cstring>
+#include <sstream>
+
 namespace nasal {
 
 var nas_vec::get_value(const i32 index) {