diff --git a/sysdeps/aix/glibtop_machine.h b/sysdeps/aix/glibtop_machine.h
index 55a8d3df..727ae5fd 100644
--- a/sysdeps/aix/glibtop_machine.h
+++ b/sysdeps/aix/glibtop_machine.h
@@ -26,8 +26,6 @@
 
 G_BEGIN_DECLS
 
-typedef struct _glibtop_machine glibtop_machine;
-
 struct _glibtop_machine
 {
 	uid_t uid, euid;
diff --git a/sysdeps/bsd/glibtop_machine.h b/sysdeps/bsd/glibtop_machine.h
index 290611d4..173aed68 100644
--- a/sysdeps/bsd/glibtop_machine.h
+++ b/sysdeps/bsd/glibtop_machine.h
@@ -47,8 +47,6 @@
 
 G_BEGIN_DECLS
 
-typedef struct _glibtop_machine glibtop_machine;
-
 struct _glibtop_machine
 {
 	uid_t uid, euid;
diff --git a/sysdeps/cygwin/glibtop_machine.h b/sysdeps/cygwin/glibtop_machine.h
index a12d7838..5f2ca009 100644
--- a/sysdeps/cygwin/glibtop_machine.h
+++ b/sysdeps/cygwin/glibtop_machine.h
@@ -28,8 +28,6 @@
 
 G_BEGIN_DECLS
 
-typedef struct _glibtop_machine		glibtop_machine;
-
 struct _glibtop_machine
 {
 	pid_t	last_pid;
diff --git a/sysdeps/darwin/glibtop_machine.h b/sysdeps/darwin/glibtop_machine.h
index eb072e0b..a31eb5c8 100644
--- a/sysdeps/darwin/glibtop_machine.h
+++ b/sysdeps/darwin/glibtop_machine.h
@@ -22,8 +22,6 @@
 
 G_BEGIN_DECLS
 
-typedef struct _glibtop_machine		glibtop_machine;
-
 struct _glibtop_machine
 {
 	uid_t uid, euid;		/* Real and effective user id */
diff --git a/sysdeps/freebsd/glibtop_machine.h b/sysdeps/freebsd/glibtop_machine.h
index cb39f398..4fd7025b 100644
--- a/sysdeps/freebsd/glibtop_machine.h
+++ b/sysdeps/freebsd/glibtop_machine.h
@@ -38,8 +38,6 @@
 
 G_BEGIN_DECLS
 
-typedef struct _glibtop_machine glibtop_machine;
-
 struct _glibtop_machine
 {
 	uid_t uid, euid;
diff --git a/sysdeps/linux/glibtop_machine.h b/sysdeps/linux/glibtop_machine.h
index 14a21bf2..5c1daad0 100644
--- a/sysdeps/linux/glibtop_machine.h
+++ b/sysdeps/linux/glibtop_machine.h
@@ -26,8 +26,6 @@
 
 G_BEGIN_DECLS
 
-typedef struct _glibtop_machine		glibtop_machine;
-
 struct _glibtop_machine
 {
 };
diff --git a/sysdeps/openbsd/glibtop_machine.h b/sysdeps/openbsd/glibtop_machine.h
index 837634da..b435ed77 100644
--- a/sysdeps/openbsd/glibtop_machine.h
+++ b/sysdeps/openbsd/glibtop_machine.h
@@ -36,8 +36,6 @@
 
 G_BEGIN_DECLS
 
-typedef struct _glibtop_machine glibtop_machine;
-
 struct _glibtop_machine
 {
 	uid_t uid, euid;
diff --git a/sysdeps/osf1/glibtop_machine.h b/sysdeps/osf1/glibtop_machine.h
index dab9f28a..ae5cedc6 100644
--- a/sysdeps/osf1/glibtop_machine.h
+++ b/sysdeps/osf1/glibtop_machine.h
@@ -34,8 +34,6 @@ G_BEGIN_DECLS
 
 int table (int id, int index, char *addr, int nel, u_int lel);
 
-typedef struct _glibtop_machine		glibtop_machine;
-
 struct _glibtop_machine
 {
 	uid_t uid, euid;		/* Real and effective user id */
diff --git a/sysdeps/solaris/glibtop_machine.h b/sysdeps/solaris/glibtop_machine.h
index 18a1979b..f45ea9eb 100644
--- a/sysdeps/solaris/glibtop_machine.h
+++ b/sysdeps/solaris/glibtop_machine.h
@@ -36,8 +36,6 @@
 
 G_BEGIN_DECLS
 
-typedef struct _glibtop_machine glibtop_machine;
-
 struct _glibtop_machine
 {
     uid_t uid, euid;
diff --git a/sysdeps/stub_suid/glibtop_machine.h b/sysdeps/stub_suid/glibtop_machine.h
index 3e8e4198..3254a60f 100644
--- a/sysdeps/stub_suid/glibtop_machine.h
+++ b/sysdeps/stub_suid/glibtop_machine.h
@@ -24,8 +24,6 @@
 
 G_BEGIN_DECLS
 
-typedef struct _glibtop_machine		glibtop_machine;
-
 struct _glibtop_machine
 {
 	uid_t uid, euid;		/* Real and effective user id */