diff --git a/contrib/ntp/include/ntp_config.h b/contrib/ntp/include/ntp_config.h
index b414466930ad..6bb738bbeefd 100644
--- a/contrib/ntp/include/ntp_config.h
+++ b/contrib/ntp/include/ntp_config.h
@@ -280,7 +280,7 @@ typedef struct settrap_parms_tag {
  * Poll Skew List
  */
 
-psl_item psl[17-3+1];		/* values for polls 3-17 */
+extern psl_item psl[17-3+1];	/* values for polls 3-17 */
 				/* To simplify the runtime code we */
 				/* don't want to have to special-case */
 				/* dealing with a default */
diff --git a/contrib/ntp/ntpd/ntp_config.c b/contrib/ntp/ntpd/ntp_config.c
index ee9df318a630..0d7af42e8758 100644
--- a/contrib/ntp/ntpd/ntp_config.c
+++ b/contrib/ntp/ntpd/ntp_config.c
@@ -202,6 +202,8 @@ int	cryptosw;		/* crypto command called */
 
 extern char *stats_drift_file;	/* name of the driftfile */
 
+psl_item psl[17-3+1];
+
 #ifdef BC_LIST_FRAMEWORK_NOT_YET_USED
 /*
  * backwards compatibility flags