diff --git a/security/nss/lib/jar/jarver.c b/security/nss/lib/jar/jarver.c
index 914818479d0..48ba8f97a26 100644
--- a/security/nss/lib/jar/jarver.c
+++ b/security/nss/lib/jar/jarver.c
@@ -46,6 +46,7 @@
 #include "jarevil.h"
 #endif
 #include "cdbhdl.h"
+#include "secder.h"
 
 /* to use huge pointers in win16 */