diff --git a/changes/bug9495_redux b/changes/bug9495_redux
new file mode 100644
index 000000000..74b0cdf2a
--- /dev/null
+++ b/changes/bug9495_redux
@@ -0,0 +1,4 @@
+  o Major bugfixes (portability):
+    - Do not crash on startup when running on Solaris. Fixes a bug
+      related to our fix for 9495; bugfix on 0.2.6.1-alpha. Reported
+      by "ruebezahl".
diff --git a/src/common/compat_pthreads.c b/src/common/compat_pthreads.c
index f4a6cad15..246076b27 100644
--- a/src/common/compat_pthreads.c
+++ b/src/common/compat_pthreads.c
@@ -279,7 +279,11 @@ tor_threads_init(void)
     pthread_mutexattr_init(&attr_recursive);
     pthread_mutexattr_settype(&attr_recursive, PTHREAD_MUTEX_RECURSIVE);
     tor_assert(0==pthread_attr_init(&attr_detached));
-    tor_assert(0==pthread_attr_setdetachstate(&attr_detached, 1));
+#ifndef PTHREAD_CREATE_DETACHED
+#define PTHREAD_CREATE_DETACHED 1
+#endif
+    tor_assert(0==pthread_attr_setdetachstate(&attr_detached,
+                                              PTHREAD_CREATE_DETACHED));
     threads_initialized = 1;
     set_main_thread();
   }