diff --git a/include/acpi/acopcode.h b/include/acpi/acopcode.h
index e6d78bd..7659a46 100644
--- a/include/acpi/acopcode.h
+++ b/include/acpi/acopcode.h
@@ -94,7 +94,7 @@
 #define ARGP_CONCAT_RES_OP              ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_TARGET)
 #define ARGP_COND_REF_OF_OP             ARGP_LIST2 (ARGP_SUPERNAME,  ARGP_SUPERNAME)
 #define ARGP_CONTINUE_OP                ARG_NONE
-#define ARGP_COPY_OP                    ARGP_LIST2 (ARGP_SUPERNAME,  ARGP_SIMPLENAME)
+#define ARGP_COPY_OP                    ARGP_LIST2 (ARGP_TERMARG,    ARGP_SIMPLENAME)
 #define ARGP_CREATE_BIT_FIELD_OP        ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_NAME)
 #define ARGP_CREATE_BYTE_FIELD_OP       ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_NAME)
 #define ARGP_CREATE_DWORD_FIELD_OP      ARGP_LIST3 (ARGP_TERMARG,    ARGP_TERMARG,       ARGP_NAME)