diff --git a/sys/amd64/amd64/identcpu.c b/sys/amd64/amd64/identcpu.c
index cd0c72eda1d8..6aa30522ebb7 100644
--- a/sys/amd64/amd64/identcpu.c
+++ b/sys/amd64/amd64/identcpu.c
@@ -240,11 +240,11 @@ printcpuinfo(void)
 				"\021<b16>"
 				"\022<b17>"
 				"\023DCA"	/* Direct Cache Access */
-				"\024<b19>"
-				"\025<b20>"
+				"\024SSE4.1"
+				"\025SSE4.2"
 				"\026<b21>"
 				"\027<b22>"
-				"\030<b23>"
+				"\030POPCNT"
 				"\031<b24>"
 				"\032<b25>"
 				"\033<b26>"
diff --git a/sys/amd64/include/specialreg.h b/sys/amd64/include/specialreg.h
index e25ed7b9a451..3fb1c53dafed 100644
--- a/sys/amd64/include/specialreg.h
+++ b/sys/amd64/include/specialreg.h
@@ -125,6 +125,9 @@
 #define	CPUID2_XTPR	0x00004000
 #define	CPUID2_PDCM	0x00008000
 #define	CPUID2_DCA	0x00040000
+#define	CPUID2_SSE41	0x00080000
+#define	CPUID2_SSE42	0x00100000
+#define	CPUID2_POPCNT	0x00800000
 
 /*
  * Important bits in the AMD extended cpuid flags