diff --git a/ssl/sslimpl.h b/ssl/sslimpl.h
index 2d21e90..88f559a 100644
--- a/ssl/sslimpl.h
+++ b/ssl/sslimpl.h
@@ -1366,6 +1366,15 @@ extern sslSessionIDUncacheFunc ssl_sid_uncache;
 
 SEC_BEGIN_PROTOS
 
+/* Functions for handling SECItemArrays, added in NSS 3.15 */
+extern SECItemArray *SECITEM_AllocArray(PLArenaPool *arena,
+                                        SECItemArray *array,
+                                        unsigned int len);
+extern SECItemArray *SECITEM_DupArray(PLArenaPool *arena,
+                                      const SECItemArray *from);
+extern void SECITEM_FreeArray(SECItemArray *array, PRBool freeit);
+extern void SECITEM_ZfreeArray(SECItemArray *array, PRBool freeit);
+
 /* Internal initialization and installation of the SSL error tables */
 extern SECStatus ssl_Init(void);
 extern SECStatus ssl_InitializePRErrorTable(void);
diff --git a/ssl/sslt.h b/ssl/sslt.h
index 0900f28..430d216 100644
--- a/ssl/sslt.h
+++ b/ssl/sslt.h
@@ -10,6 +10,19 @@
 
 #include "prtypes.h"
 
+/* SECItemArray is added in NSS 3.15.  Define the type if compiling
+** against an older version of NSS.
+*/
+#include "nssutil.h"
+#if NSSUTIL_VMAJOR == 3 && NSSUTIL_VMINOR < 15
+typedef struct SECItemArrayStr SECItemArray;
+
+struct SECItemArrayStr {
+    SECItem *items;
+    unsigned int len;
+};
+#endif  /* NSSUTIL_VMAJOR == 3 && NSSUTIL_VMINOR < 15 */
+
 typedef struct SSL3StatisticsStr {
     /* statistics from ssl3_SendClientHello (sch) */
     long sch_sid_cache_hits;