diff --git a/base/sources/backends/linux_system.h b/base/sources/backends/linux_system.h
index d93daa31..bb8987ed 100644
--- a/base/sources/backends/linux_system.h
+++ b/base/sources/backends/linux_system.h
@@ -163,7 +163,6 @@ struct x11_context {
 
 struct iron_x11_procs xlib;
 struct x11_context x11_ctx;
-void iron_copy_to_clipboard(const char *text);
 
 #ifdef WITH_GAMEPAD
 void iron_linux_initHIDGamepads();