diff --git a/zconf/css/lscss.c b/zconf/css/lscss.c
index fd58bb3a..6d892774 100644
--- a/zconf/css/lscss.c
+++ b/zconf/css/lscss.c
@@ -7,6 +7,7 @@
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
+#include <libgen.h>
 #include <stdio.h>
 #include <stdlib.h>
 
diff --git a/zdev/src/ccw.c b/zdev/src/ccw.c
index 9d332220..b4e1c1b4 100644
--- a/zdev/src/ccw.c
+++ b/zdev/src/ccw.c
@@ -8,6 +8,7 @@
  */
 
 #include <inttypes.h>
+#include <libgen.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/zdev/src/ccwgroup.c b/zdev/src/ccwgroup.c
index 61e12ccf..f27cda4f 100644
--- a/zdev/src/ccwgroup.c
+++ b/zdev/src/ccwgroup.c
@@ -7,6 +7,7 @@
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
+#include <libgen.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/zdev/src/device.c b/zdev/src/device.c
index 864108bd..fedcab91 100644
--- a/zdev/src/device.c
+++ b/zdev/src/device.c
@@ -7,6 +7,7 @@
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
+#include <libgen.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/zdev/src/generic_ccw.c b/zdev/src/generic_ccw.c
index c7f144a7..ff560e94 100644
--- a/zdev/src/generic_ccw.c
+++ b/zdev/src/generic_ccw.c
@@ -7,6 +7,7 @@
  * it under the terms of the MIT license. See LICENSE for details.
  */
 
+#include <libgen.h>
 #include <string.h>
 
 #include "lib/util_path.h"