diff --git a/sys/alpha/include/setjmp.h b/sys/alpha/include/setjmp.h
index 5fcfe2ab55f..3cc52dc626e 100644
--- a/sys/alpha/include/setjmp.h
+++ b/sys/alpha/include/setjmp.h
@@ -40,7 +40,7 @@
  * internally to avoid some run-time errors for mismatches.
  */
 #ifndef _ANSI_SOURCE
-typedef struct { long _sjb[_JBLEN + 1]; } sigjmp_buf[1];
+typedef struct _sigjmp_buf { long _sjb[_JBLEN + 1]; } sigjmp_buf[1];
 #endif /* not ANSI */
 
-typedef struct { long _jb[_JBLEN + 1]; } jmp_buf[1];
+typedef struct _jmp_buf { long _jb[_JBLEN + 1]; } jmp_buf[1];
diff --git a/sys/amd64/include/setjmp.h b/sys/amd64/include/setjmp.h
index 3097df77f0a..a311d837c96 100644
--- a/sys/amd64/include/setjmp.h
+++ b/sys/amd64/include/setjmp.h
@@ -40,7 +40,7 @@
  * internally to avoid some run-time errors for mismatches.
  */
 #ifndef _ANSI_SOURCE
-typedef struct { int _sjb[_JBLEN + 1]; } sigjmp_buf[1];
+typedef struct _sigjmp_buf { int _sjb[_JBLEN + 1]; } sigjmp_buf[1];
 #endif /* not ANSI */
 
-typedef struct { int _jb[_JBLEN + 1]; } jmp_buf[1];
+typedef struct _jmp_buf { int _jb[_JBLEN + 1]; } jmp_buf[1];
diff --git a/sys/i386/include/setjmp.h b/sys/i386/include/setjmp.h
index 3097df77f0a..a311d837c96 100644
--- a/sys/i386/include/setjmp.h
+++ b/sys/i386/include/setjmp.h
@@ -40,7 +40,7 @@
  * internally to avoid some run-time errors for mismatches.
  */
 #ifndef _ANSI_SOURCE
-typedef struct { int _sjb[_JBLEN + 1]; } sigjmp_buf[1];
+typedef struct _sigjmp_buf { int _sjb[_JBLEN + 1]; } sigjmp_buf[1];
 #endif /* not ANSI */
 
-typedef struct { int _jb[_JBLEN + 1]; } jmp_buf[1];
+typedef struct _jmp_buf { int _jb[_JBLEN + 1]; } jmp_buf[1];
diff --git a/sys/ia64/include/setjmp.h b/sys/ia64/include/setjmp.h
index 5fcfe2ab55f..3cc52dc626e 100644
--- a/sys/ia64/include/setjmp.h
+++ b/sys/ia64/include/setjmp.h
@@ -40,7 +40,7 @@
  * internally to avoid some run-time errors for mismatches.
  */
 #ifndef _ANSI_SOURCE
-typedef struct { long _sjb[_JBLEN + 1]; } sigjmp_buf[1];
+typedef struct _sigjmp_buf { long _sjb[_JBLEN + 1]; } sigjmp_buf[1];
 #endif /* not ANSI */
 
-typedef struct { long _jb[_JBLEN + 1]; } jmp_buf[1];
+typedef struct _jmp_buf { long _jb[_JBLEN + 1]; } jmp_buf[1];