diff --git a/bits/termios.h b/bits/termios.h
index 8f0b817dbf..798012cb8e 100644
--- a/bits/termios.h
+++ b/bits/termios.h
@@ -286,7 +286,16 @@ struct termios
   cc_t c_cc[NCCS];
 
   /* Input and output baud rates.  */
-  speed_t __ispeed, __ospeed;
+  __extension__ union {
+    speed_t __ispeed;
+    speed_t c_ispeed;
+  };
+#define _HAVE_STRUCT_TERMIOS_C_ISPEED 1
+  __extension__ union {
+    speed_t __ospeed;
+    speed_t c_ospeed;
+  };
+#define _HAVE_STRUCT_TERMIOS_C_OSPEED 1
 };
 
 #define _IOT_termios /* Hurd ioctl type field.  */ \
diff --git a/sysdeps/unix/sysv/linux/alpha/bits/termios-struct.h b/sysdeps/unix/sysv/linux/alpha/bits/termios-struct.h
index de4d5fc0ed..f50e9ef6e3 100644
--- a/sysdeps/unix/sysv/linux/alpha/bits/termios-struct.h
+++ b/sysdeps/unix/sysv/linux/alpha/bits/termios-struct.h
@@ -30,8 +30,15 @@ struct termios
     tcflag_t c_lflag;		/* local mode flags */
     cc_t c_cc[NCCS];		/* control characters */
     cc_t c_line;		/* line discipline (== c_cc[33]) */
-    speed_t c_ispeed;		/* input speed */
-    speed_t c_ospeed;		/* output speed */
+    /* Input and output baud rates.  */
+    __extension__ union {
+      speed_t __ispeed;
+      speed_t c_ispeed;
+    };
 #define _HAVE_STRUCT_TERMIOS_C_ISPEED 1
+    __extension__ union {
+      speed_t __ospeed;
+      speed_t c_ospeed;
+    };
 #define _HAVE_STRUCT_TERMIOS_C_OSPEED 1
   };
diff --git a/sysdeps/unix/sysv/linux/bits/termios-struct.h b/sysdeps/unix/sysv/linux/bits/termios-struct.h
index 4c501a54b0..0aba1a446e 100644
--- a/sysdeps/unix/sysv/linux/bits/termios-struct.h
+++ b/sysdeps/unix/sysv/linux/bits/termios-struct.h
@@ -29,8 +29,15 @@ struct termios
     tcflag_t c_lflag;		/* local mode flags */
     cc_t c_line;			/* line discipline */
     cc_t c_cc[NCCS];		/* control characters */
-    speed_t c_ispeed;		/* input speed */
-    speed_t c_ospeed;		/* output speed */
+    /* Input and output baud rates.  */
+    __extension__ union {
+      speed_t __ispeed;
+      speed_t c_ispeed;
+    };
 #define _HAVE_STRUCT_TERMIOS_C_ISPEED 1
+    __extension__ union {
+      speed_t __ospeed;
+      speed_t c_ospeed;
+    };
 #define _HAVE_STRUCT_TERMIOS_C_OSPEED 1
   };