diff --git a/EXAMPLE/citersol.c b/EXAMPLE/citersol.c
index 06c28341..00191b90 100644
--- a/EXAMPLE/citersol.c
+++ b/EXAMPLE/citersol.c
@@ -38,7 +38,6 @@ at the top-level directory.
  * \ingroup Example
  */
 
-#include <unistd.h>
 #include "slu_cdefs.h"
 
 superlu_options_t *GLOBAL_OPTIONS;
diff --git a/EXAMPLE/ditersol.c b/EXAMPLE/ditersol.c
index dd0f5694..65c024e1 100644
--- a/EXAMPLE/ditersol.c
+++ b/EXAMPLE/ditersol.c
@@ -38,7 +38,6 @@ at the top-level directory.
  * \ingroup Example
  */
 
-#include <unistd.h>
 #include "slu_ddefs.h"
 
 superlu_options_t *GLOBAL_OPTIONS;
diff --git a/EXAMPLE/sitersol.c b/EXAMPLE/sitersol.c
index 1de28df3..71eb168f 100644
--- a/EXAMPLE/sitersol.c
+++ b/EXAMPLE/sitersol.c
@@ -38,7 +38,6 @@ at the top-level directory.
  * \ingroup Example
  */
 
-#include <unistd.h>
 #include "slu_sdefs.h"
 
 superlu_options_t *GLOBAL_OPTIONS;
diff --git a/EXAMPLE/zitersol.c b/EXAMPLE/zitersol.c
index e47873f9..16bd137b 100644
--- a/EXAMPLE/zitersol.c
+++ b/EXAMPLE/zitersol.c
@@ -38,7 +38,6 @@ at the top-level directory.
  * \ingroup Example
  */
 
-#include <unistd.h>
 #include "slu_zdefs.h"
 
 superlu_options_t *GLOBAL_OPTIONS;