diff --git a/security/nss/TAG-INFO b/security/nss/TAG-INFO
index e82e70d7ff87..2a418e7dd13d 100644
--- a/security/nss/TAG-INFO
+++ b/security/nss/TAG-INFO
@@ -1 +1 @@
-NSS_3_16_1_BETA2
+NSS_3_16_1_BETA3
diff --git a/security/nss/coreconf/coreconf.dep b/security/nss/coreconf/coreconf.dep
index 5182f75552c8..590d1bfaeee3 100644
--- a/security/nss/coreconf/coreconf.dep
+++ b/security/nss/coreconf/coreconf.dep
@@ -10,3 +10,4 @@
  */
 
 #error "Do not include this header file."
+
diff --git a/security/nss/lib/freebl/Makefile b/security/nss/lib/freebl/Makefile
index dbf386200606..2a51501bb41a 100644
--- a/security/nss/lib/freebl/Makefile
+++ b/security/nss/lib/freebl/Makefile
@@ -135,9 +135,9 @@ else
     ifdef BUILD_OPT
 	OPTIMIZER += -Ox  # maximum optimization for freebl
     endif
-    # The Intel AES assembly code requires Visual C++ 2010 (10.0). The _xgetbv
-    # compiler intrinsic function requires Visual C++ 2010 (10.0) SP1.
-    ifeq ($(_MSC_VER_GE_10SP1),1)
+    # The Intel AES assembly code requires Visual C++ 2010.
+    # if $(_MSC_VER) >= 1600 (Visual C++ 2010)
+    ifeq ($(firstword $(sort $(_MSC_VER) 1600)),1600)
 	DEFINES += -DUSE_HW_AES -DINTEL_GCM
 	ASFILES += intel-aes-x86-masm.asm intel-gcm-x86-masm.asm
 	EXTRA_SRCS += intel-gcm-wrap.c
diff --git a/security/nss/lib/freebl/blapi.h b/security/nss/lib/freebl/blapi.h
index f73d1a2753e8..2e88d769eadf 100644
--- a/security/nss/lib/freebl/blapi.h
+++ b/security/nss/lib/freebl/blapi.h
@@ -1,5 +1,5 @@
 /*
- * blapi.h - public prototypes for the crypto library
+ * blapi.h - public prototypes for the freebl library
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
diff --git a/security/nss/lib/freebl/blapii.h b/security/nss/lib/freebl/blapii.h
index 3ba7b7c22c07..4840fc79daea 100644
--- a/security/nss/lib/freebl/blapii.h
+++ b/security/nss/lib/freebl/blapii.h
@@ -1,5 +1,5 @@
 /*
- * blapii.h - private data structures and prototypes for the crypto library
+ * blapii.h - private data structures and prototypes for the freebl library
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
diff --git a/security/nss/lib/freebl/blapit.h b/security/nss/lib/freebl/blapit.h
index b533743b30c3..8e172d424ef0 100644
--- a/security/nss/lib/freebl/blapit.h
+++ b/security/nss/lib/freebl/blapit.h
@@ -1,5 +1,5 @@
 /*
- * blapit.h - public data structures for the crypto library
+ * blapit.h - public data structures for the freebl library
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
diff --git a/security/nss/lib/freebl/rijndael.c b/security/nss/lib/freebl/rijndael.c
index 67057c701bce..4e4be79fdf10 100644
--- a/security/nss/lib/freebl/rijndael.c
+++ b/security/nss/lib/freebl/rijndael.c
@@ -972,13 +972,24 @@ AESContext * AES_AllocateContext(void)
 /*
  * Adapted from the example code in "How to detect New Instruction support in
  * the 4th generation Intel Core processor family" by Max Locktyukhin.
+ *
+ * XGETBV:
+ *   Reads an extended control register (XCR) specified by ECX into EDX:EAX.
  */
 static PRBool
 check_xcr0_ymm()
 {
     PRUint32 xcr0;
 #if defined(_MSC_VER)
+#if defined(_M_IX86)
+    __asm {
+        mov ecx, 0
+        xgetbv
+        mov xcr0, eax
+    }
+#else
     xcr0 = (PRUint32)_xgetbv(0);  /* Requires VS2010 SP1 or later. */
+#endif
 #else
     __asm__ ("xgetbv" : "=a" (xcr0) : "c" (0) : "%edx");
 #endif
diff --git a/security/nss/lib/util/secdig.h b/security/nss/lib/util/secdig.h
index 8a2f092def23..6f218ec340e8 100644
--- a/security/nss/lib/util/secdig.h
+++ b/security/nss/lib/util/secdig.h
@@ -1,5 +1,5 @@
 /*
- * secdig.h - public prototypes for digestinfos from the util lib
+ * secdig.h - public prototypes for digest-info functions
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
diff --git a/security/nss/lib/util/secdigt.h b/security/nss/lib/util/secdigt.h
index 65ca22f7441f..2414d79fedda 100644
--- a/security/nss/lib/util/secdigt.h
+++ b/security/nss/lib/util/secdigt.h
@@ -1,5 +1,5 @@
 /*
- * secdigt.h - public data structures for digestinfos from the util lib.
+ * secdigt.h - public data structures for digest-info objects
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
@@ -23,6 +23,4 @@ struct SGNDigestInfoStr {
 };
 typedef struct SGNDigestInfoStr SGNDigestInfo;
 
-
-
 #endif /* _SECDIGT_H_ */