diff --git a/core/src/bindings/bind_gmtool.c b/core/src/bindings/bind_gmtool.c
index 194a94906..01e4dff80 100644
--- a/core/src/bindings/bind_gmtool.c
+++ b/core/src/bindings/bind_gmtool.c
@@ -1,5 +1,5 @@
-#include <curses.h>
 #include <platform.h>
+#include <curses.h>
 #include <kernel/types.h>
 
 #include "bind_gmtool.h"
diff --git a/core/src/gmtool.c b/core/src/gmtool.c
index cc9ba43f5..6036970f9 100644
--- a/core/src/gmtool.c
+++ b/core/src/gmtool.c
@@ -8,8 +8,8 @@
  *
  */
 
-#include <curses.h>
 #include <platform.h>
+#include <curses.h>
 #include <util/bool.h>
 
 #include <kernel/config.h>
diff --git a/core/src/platform.h b/core/src/platform.h
index dfce03b80..6580d3207 100644
--- a/core/src/platform.h
+++ b/core/src/platform.h
@@ -200,10 +200,6 @@ typedef struct _stat stat_type;
 # endif
 #endif
 
-#ifndef HAVE_STRDUP
-extern char *strdup(const char *s);
-#endif
-
 #ifndef HAVE_SLEEP
 #ifdef HAVE__SLEEP_MSEC
 # define sleep(sec) _sleep(1000*sec)
diff --git a/core/src/util/listbox.c b/core/src/util/listbox.c
index 48e393baa..ab3dd9eb9 100644
--- a/core/src/util/listbox.c
+++ b/core/src/util/listbox.c
@@ -9,8 +9,8 @@
 */
 
 /* wenn platform.h nicht vor curses included wird, kompiliert es unter windows nicht */
-#include <curses.h>
 #include <platform.h>
+#include <curses.h>
 #include <kernel/config.h>
 
 #include "listbox.h"