diff --git a/dom/src/modules/LIBXMLPlugin/daeLIBXMLPlugin.cpp b/dom/src/modules/LIBXMLPlugin/daeLIBXMLPlugin.cpp
index 4536275..b494f6b 100644
--- a/dom/src/modules/LIBXMLPlugin/daeLIBXMLPlugin.cpp
+++ b/dom/src/modules/LIBXMLPlugin/daeLIBXMLPlugin.cpp
@@ -33,6 +33,7 @@
 using namespace std;
 
 #include <zip.h> // for saving compressed files
+#include <zlib.h>
 #ifdef _WIN32
 #include <iowin32.h>
 #else