diff --git a/c/src/exec/posix/src/pthreadgetschedparam.c b/c/src/exec/posix/src/pthreadgetschedparam.c
index 00a6f65641..7287d09a36 100644
--- a/c/src/exec/posix/src/pthreadgetschedparam.c
+++ b/c/src/exec/posix/src/pthreadgetschedparam.c
@@ -19,6 +19,7 @@
 
 #include <rtems/system.h>
 #include <rtems/posix/pthread.h>
+#include <rtems/posix/priority.h>
 
 int pthread_getschedparam(
   pthread_t           thread,
diff --git a/cpukit/posix/src/pthreadgetschedparam.c b/cpukit/posix/src/pthreadgetschedparam.c
index 00a6f65641..7287d09a36 100644
--- a/cpukit/posix/src/pthreadgetschedparam.c
+++ b/cpukit/posix/src/pthreadgetschedparam.c
@@ -19,6 +19,7 @@
 
 #include <rtems/system.h>
 #include <rtems/posix/pthread.h>
+#include <rtems/posix/priority.h>
 
 int pthread_getschedparam(
   pthread_t           thread,