diff --git a/plugin/visio/VisioGraphic.cpp b/plugin/visio/VisioGraphic.cpp

index 303eac0..14e377c 100644

--- a/plugin/visio/VisioGraphic.cpp

+++ b/plugin/visio/VisioGraphic.cpp

@@ -29,6 +29,8 @@

 #define isfinite(x) finite(x)

 #endif

+#include <cstdlib>

+

 #include "VisioGraphic.h"

 #include "gvcjob.h"

diff --git a/plugin/visio/VisioText.cpp b/plugin/visio/VisioText.cpp

index 635806c..3c6441a 100644

--- a/plugin/visio/VisioText.cpp

+++ b/plugin/visio/VisioText.cpp

@@ -17,6 +17,7 @@

 #include "gvcjob.h"

 #include "gvio.h"

+#include <cstdlib>

 #include <string.h>

 extern "C" char *xml_string(char* str);