diff --git a/src/osgPlugins/ESRIShape/ESRIShape.h b/src/osgPlugins/ESRIShape/ESRIShape.h
index 743a810cb..aaafc1441 100644
--- a/src/osgPlugins/ESRIShape/ESRIShape.h
+++ b/src/osgPlugins/ESRIShape/ESRIShape.h
@@ -2,7 +2,9 @@
 #define OSG_SHAPE_H
 
 #include <stdio.h>
+#ifndef WIN32
 #include <unistd.h>
+#endif
 #include <osg/Referenced>
 
 namespace ESRIShape {