diff --git a/tests/unistd_test.cpp b/tests/unistd_test.cpp
index f0aeb09..433c1b5 100644
--- a/tests/unistd_test.cpp
+++ b/tests/unistd_test.cpp
@@ -554,6 +554,7 @@
   EXPECT_EQ(_POSIX_VERSION, _POSIX_PRIORITY_SCHEDULING);
   EXPECT_EQ(_POSIX_VERSION, _POSIX_RAW_SOCKETS);
   EXPECT_EQ(_POSIX_VERSION, _POSIX_READER_WRITER_LOCKS);
+  EXPECT_EQ(_POSIX_VERSION, _POSIX_REALTIME_SIGNALS);
   EXPECT_GT(_POSIX_REGEXP, 0);
   EXPECT_GT(_POSIX_RE_DUP_MAX, 0);
   EXPECT_GT(_POSIX_SAVED_IDS, 0);
@@ -617,7 +618,6 @@
   EXPECT_EQ(-1, _POSIX_CPUTIME);
   EXPECT_EQ(-1, _POSIX_MESSAGE_PASSING);
   EXPECT_EQ(-1, _POSIX_PRIORITIZED_IO);
-  EXPECT_EQ(-1, _POSIX_REALTIME_SIGNALS);
   EXPECT_EQ(-1, _POSIX_SHARED_MEMORY_OBJECTS);
   EXPECT_EQ(-1, _POSIX_SPAWN);
   EXPECT_EQ(-1, _POSIX_SPIN_LOCKS);
@@ -702,6 +702,7 @@
   VERIFY_SYSCONF_POSIX_VERSION(_SC_MEMLOCK_RANGE);
   VERIFY_SYSCONF_POSIX_VERSION(_SC_MEMORY_PROTECTION);
   VERIFY_SYSCONF_POSIX_VERSION(_SC_PRIORITY_SCHEDULING);
+  VERIFY_SYSCONF_POSIX_VERSION(_SC_REALTIME_SIGNALS);
   VERIFY_SYSCONF_POSIX_VERSION(_SC_SEMAPHORES);
   VERIFY_SYSCONF_POSIX_VERSION(_SC_SYNCHRONIZED_IO);
   VERIFY_SYSCONF_POSIX_VERSION(_SC_TIMERS);
@@ -778,7 +779,6 @@
   VERIFY_SYSCONF_NOT_SUPPORT(_SC_CPUTIME);
   VERIFY_SYSCONF_NOT_SUPPORT(_SC_MESSAGE_PASSING);
   VERIFY_SYSCONF_NOT_SUPPORT(_SC_PRIORITIZED_IO);
-  VERIFY_SYSCONF_NOT_SUPPORT(_SC_REALTIME_SIGNALS);
   VERIFY_SYSCONF_NOT_SUPPORT(_SC_SHARED_MEMORY_OBJECTS);
   VERIFY_SYSCONF_NOT_SUPPORT(_SC_SPAWN);
   VERIFY_SYSCONF_NOT_SUPPORT(_SC_SPIN_LOCKS);