diff --git a/arch/xtensa/src/common/xtensa.h b/arch/xtensa/src/common/xtensa.h
index 16e59f6e846..490d68d2722 100644
--- a/arch/xtensa/src/common/xtensa.h
+++ b/arch/xtensa/src/common/xtensa.h
@@ -233,10 +233,6 @@ void modifyreg8(unsigned int addr, uint8_t clearbits, uint8_t setbits);
 void modifyreg16(unsigned int addr, uint16_t clearbits, uint16_t setbits);
 void modifyreg32(unsigned int addr, uint32_t clearbits, uint32_t setbits);
 
-/* Context switching */
-
-void xtensa_copystate(uint32_t *dest, uint32_t *src);
-
 /* Serial output */
 
 void up_lowputs(const char *str);