diff --git a/configs/boardctl.c b/configs/boardctl.c
index b335e76c507..cb0b252bca5 100644
--- a/configs/boardctl.c
+++ b/configs/boardctl.c
@@ -48,7 +48,7 @@
 #include <nuttx/board.h>
 #include <nuttx/lib/modlib.h>
 #include <nuttx/binfmt/symtab.h>
-#include <nuttx/nx/nx.h>
+#include <nuttx/nx/nxmu.h>
 
 #ifdef CONFIG_BOARDCTL_USBDEVCTRL
 #  include <nuttx/usb/cdcacm.h>
diff --git a/graphics/nxmu/nxmu_start.c b/graphics/nxmu/nxmu_start.c
index c76b0eb39d7..22eaffb0cd9 100644
--- a/graphics/nxmu/nxmu_start.c
+++ b/graphics/nxmu/nxmu_start.c
@@ -50,6 +50,7 @@
 #include <nuttx/signal.h>
 #include <nuttx/kthread.h>
 #include <nuttx/nx/nx.h>
+#include <nuttx/nx/nxmu.h>
 
 #include "nxfe.h"
 
diff --git a/include/nuttx/nx/nx.h b/include/nuttx/nx/nx.h
index 514c5306978..a2469f01237 100644
--- a/include/nuttx/nx/nx.h
+++ b/include/nuttx/nx/nx.h
@@ -269,31 +269,6 @@ extern "C"
 int nx_runinstance(FAR const char *mqname, FAR NX_DRIVERTYPE *dev);
 #define nx_run(dev) nx_runinstance(NX_DEFAULT_SERVER_MQNAME, dev)
 
-/****************************************************************************
- * Name: nxmu_start
- *
- * Description:
- *   nxmu_start() provides a wrapper function to simplify and standardize
- *   the starting of the NX server.
- *
- *   nxmu_start() can be called (indirectly) from applications via the
- *   boardctl() interface with the BOARDIOC_NX_START command.
- *
- * Input Parameters:
- *   None
- *
- * Returned Value:
- *   Zero (OK) is returned on success.  This indicates that the NX server
- *   has been successfully started, is running, and waiting to accept
- *   connections from NX clients.
- *
- *   A negated errno value is returned on failure.  The errno value indicates
- *   the nature of the failure.
- *
- ****************************************************************************/
-
-int nxmu_start(void);
-
 /****************************************************************************
  * Name: nx_connectinstance (and nx_connect macro)
  *
diff --git a/include/nuttx/nx/nxmu.h b/include/nuttx/nx/nxmu.h
index fb6cd68d343..e13c1237973 100644
--- a/include/nuttx/nx/nxmu.h
+++ b/include/nuttx/nx/nxmu.h
@@ -473,6 +473,31 @@ extern "C"
  * Public Functions
  ****************************************************************************/
 
+/****************************************************************************
+ * Name: nxmu_start
+ *
+ * Description:
+ *   nxmu_start() provides a wrapper function to simplify and standardize
+ *   the starting of the NX server.
+ *
+ *   nxmu_start() can be called (indirectly) from applications via the
+ *   boardctl() interface with the BOARDIOC_NX_START command.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success.  This indicates that the NX server
+ *   has been successfully started, is running, and waiting to accept
+ *   connections from NX clients.
+ *
+ *   A negated errno value is returned on failure.  The errno value indicates
+ *   the nature of the failure.
+ *
+ ****************************************************************************/
+
+int nxmu_start(void);
+
 /****************************************************************************
  * Name: nxfe_constructwindow
  *