diff --git a/fixincludes/ChangeLog b/fixincludes/ChangeLog
index e9bdcbdfa6e..d4ac19c0a16 100644
--- a/fixincludes/ChangeLog
+++ b/fixincludes/ChangeLog
@@ -1,3 +1,8 @@
+2018-06-27  Rasmus Villemoes  <rv@rasmusvillemoes.dk>
+
+	* tests/base/ioLib.h [VXWORKS_IOLIB_INCLUDE_UNISTD_CHECK]: Add
+	missing hunk.
+
 2018-06-12    Rasmus Villemoes <rasmus.villemoes@prevas.dk>
 
 	* genfixes: exit 1 when autogen not found.
diff --git a/fixincludes/tests/base/ioLib.h b/fixincludes/tests/base/ioLib.h
index d570c895d57..a3ff6c1eb86 100644
--- a/fixincludes/tests/base/ioLib.h
+++ b/fixincludes/tests/base/ioLib.h
@@ -17,3 +17,8 @@ extern int ioctl ( int asdf1234, int jkl , int qwerty ) ;
 #if defined( VXWORKS_WRITE_CONST_CHECK )
 extern int  write (int, const char*, size_t);
 #endif  /* VXWORKS_WRITE_CONST_CHECK */
+
+
+#if defined( VXWORKS_IOLIB_INCLUDE_UNISTD_CHECK )
+#include <unistd.h>
+#endif  /* VXWORKS_IOLIB_INCLUDE_UNISTD_CHECK */