diff --git a/headers/os/kernel/OS.h b/headers/os/kernel/OS.h
index 5ae2463167..97190bd3e2 100644
--- a/headers/os/kernel/OS.h
+++ b/headers/os/kernel/OS.h
@@ -493,7 +493,8 @@ typedef enum cpu_types {
 	/* According to "Revision guide for AMD Athlon 64
 	 * and AMD Opteron Processors" (25759.pdf)
 	 */
-	B_CPU_AMD_ATHLON_64_MODEL_4         = 0x11f4,
+	B_CPU_AMD_ATHLON_64_MODEL_3		= 0x11f3,
+	B_CPU_AMD_ATHLON_64_MODEL_4,
 	B_CPU_AMD_ATHLON_64_MODEL_5,
 	B_CPU_AMD_OPTERON					= B_CPU_AMD_ATHLON_64_MODEL_5,
 	B_CPU_AMD_ATHLON_64_FX				= B_CPU_AMD_ATHLON_64_MODEL_5,
diff --git a/headers/private/shared/cpu_type.h b/headers/private/shared/cpu_type.h
index 6be1135fdc..02f5d608bc 100644
--- a/headers/private/shared/cpu_type.h
+++ b/headers/private/shared/cpu_type.h
@@ -151,6 +151,7 @@ get_cpu_model_string(system_info *info)
 		case B_CPU_AMD_DURON:
 		case B_CPU_AMD_ATHLON_XP_MODEL_7:
 			return "Duron";
+		case B_CPU_AMD_ATHLON_64_MODEL_3:
 		case B_CPU_AMD_ATHLON_64_MODEL_4:
 		case B_CPU_AMD_ATHLON_64_MODEL_7:
 		case B_CPU_AMD_ATHLON_64_MODEL_8: