diff --git a/libc/include/sys/procfs.h b/libc/include/sys/procfs.h
index b5b1a4667..7ef5023ab 100644
--- a/libc/include/sys/procfs.h
+++ b/libc/include/sys/procfs.h
@@ -39,6 +39,10 @@ typedef elf_greg_t elf_gregset_t[NGREG];
 
 typedef fpregset_t elf_fpregset_t;
 
+#if defined(__i386__)
+typedef struct user_fpxregs_struct elf_fpxregset_t;
+#endif
+
 typedef elf_gregset_t prgregset_t;
 typedef elf_fpregset_t prfpregset_t;
 
diff --git a/libc/include/sys/user.h b/libc/include/sys/user.h
index b370add7f..d63fe6aa5 100644
--- a/libc/include/sys/user.h
+++ b/libc/include/sys/user.h
@@ -47,7 +47,7 @@ struct user_fpregs_struct {
   long fos;
   long st_space[20];
 };
-struct user_fxsr_struct {
+struct user_fpxregs_struct {
   unsigned short cwd;
   unsigned short swd;
   unsigned short twd;