diff --git a/c/src/lib/libbsp/sparc/shared/gnatcommon.c b/c/src/lib/libbsp/sparc/shared/gnatcommon.c
index ca8d59928a..c44eacba2f 100644
--- a/c/src/lib/libbsp/sparc/shared/gnatcommon.c
+++ b/c/src/lib/libbsp/sparc/shared/gnatcommon.c
@@ -5,6 +5,8 @@
  *
  */
 
+#include <unistd.h> /* getpid */
+
 #include <bsp.h>
 #include <rtems/bspIo.h>
 #include <signal.h>
diff --git a/cpukit/posix/src/sched_rr_get_interval.c b/cpukit/posix/src/sched_rr_get_interval.c
index dfea1abff7..c9e3e280ca 100644
--- a/cpukit/posix/src/sched_rr_get_interval.c
+++ b/cpukit/posix/src/sched_rr_get_interval.c
@@ -15,6 +15,7 @@
 #include "config.h"
 #endif
 
+#include <unistd.h> /* getpid */
 #include <sched.h>
 #include <errno.h>