diff --git a/sysdeps/unix/sysv/linux/alpha/bits/types.h b/sysdeps/unix/sysv/linux/alpha/bits/types.h
index 722db9e230..445ca94e8f 100644
--- a/sysdeps/unix/sysv/linux/alpha/bits/types.h
+++ b/sysdeps/unix/sysv/linux/alpha/bits/types.h
@@ -128,7 +128,7 @@ typedef unsigned int __socklen_t;
 
 
 /* Now add the thread types.  */
-#ifdef __USE_UNIX98
+#if defined __USE_POSIX199506 || defined __USE_UNIX98
 # include <bits/pthreadtypes.h>
 #endif
 
diff --git a/sysdeps/unix/sysv/linux/mips/bits/types.h b/sysdeps/unix/sysv/linux/mips/bits/types.h
index 379f2bcd32..818b9479c3 100644
--- a/sysdeps/unix/sysv/linux/mips/bits/types.h
+++ b/sysdeps/unix/sysv/linux/mips/bits/types.h
@@ -154,7 +154,7 @@ typedef unsigned int __socklen_t;
 
 
 /* Now add the thread types.  */
-#ifdef __USE_UNIX98
+#if defined __USE_POSIX199506 || defined __USE_UNIX98
 # include <bits/pthreadtypes.h>
 #endif