diff --git a/headers/posix/unistd.h b/headers/posix/unistd.h
index 4cc5e3f967..cbe72ff4ad 100644
--- a/headers/posix/unistd.h
+++ b/headers/posix/unistd.h
@@ -104,10 +104,8 @@
 /* TODO: check */
 #define _SC_IOV_MAX						32
 #define _SC_UIO_MAXIOV					_SC_IOV_MAX
-#define _SC_NPROCESSORS_MAX				33
 #define _SC_NPROCESSORS_CONF			34
 #define _SC_NPROCESSORS_ONLN			35
-#define _SC_CPUID_MAX					36
 #define _SC_ATEXIT_MAX					37
 #define _SC_PASS_MAX					39
 #define _SC_PHYS_PAGES					40
diff --git a/src/system/libroot/posix/unistd/conf.cpp b/src/system/libroot/posix/unistd/conf.cpp
index dfe67688c9..688feac029 100644
--- a/src/system/libroot/posix/unistd/conf.cpp
+++ b/src/system/libroot/posix/unistd/conf.cpp
@@ -98,8 +98,6 @@ __sysconf(int name)
 			return _POSIX_THREADS;
 		case _SC_IOV_MAX:
 			return IOV_MAX;
-		case _SC_NPROCESSORS_MAX:
-			return B_MAX_CPU_COUNT;
 		case _SC_NPROCESSORS_CONF:
 		{
 			system_info info;
@@ -125,8 +123,6 @@ __sysconf(int name)
 					count++;
 			return count;
 		}
-		case _SC_CPUID_MAX:
-			return B_MAX_CPU_COUNT - 1;
 		case _SC_ATEXIT_MAX:
 			return ATEXIT_MAX;
 		case _SC_PASS_MAX: