diff --git a/firmware/target/mips/ingenic_jz47xx/system-target.h b/firmware/target/mips/ingenic_jz47xx/system-target.h
index cfcec9cd79..d923a48546 100644
--- a/firmware/target/mips/ingenic_jz47xx/system-target.h
+++ b/firmware/target/mips/ingenic_jz47xx/system-target.h
@@ -94,7 +94,6 @@ void __dcache_invalidate_all(void);
 void __icache_invalidate_all(void);
 void __flush_dcache_line(unsigned long addr);
 void dma_cache_wback_inv(unsigned long addr, unsigned long size);
-int request_irq(unsigned int irq, void (*handler)(void));
 void sti(void);
 void cli(void);