diff --git a/src/gbasm/opcodes.c b/src/gbasm/opcodes.c
index eb8ccf9..20e7e4e 100644
--- a/src/gbasm/opcodes.c
+++ b/src/gbasm/opcodes.c
@@ -210,98 +210,98 @@ size_t ld_emit(struct emitter *emitter,
 struct gbasm_op_info gbasm_op_infos[] = {
 	{
 		.opcode = "nop",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = nop_emit,
 	},
 	{
 		.opcode = "halt",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = halt_emit,
 	},
 	{
 		.opcode = "stop",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = stop_emit,
 	},
 	{
 		.opcode = "di",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = di_emit,
 	},
 	{
 		.opcode = "ei",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = ei_emit,
 	},
 	{
 		.opcode = "rla",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = rla_emit,
 	},
 	{
 		.opcode = "rra",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = rra_emit,
 	},
 	{
 		.opcode = "rlca",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = rlca_emit,
 	},
 	{
 		.opcode = "rrca",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = rrca_emit,
 	},
 	{
 		.opcode = "daa",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = daa_emit,
 	},
 	{
 		.opcode = "scf",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = scf_emit,
 	},
 	{
 		.opcode = "reti",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = reti_emit,
 	},
 	{
 		.opcode = "cpl",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = cpl_emit,
 	},
 	{
 		.opcode = "ccf",
-		.operand_types = {},
+		.operand_types = {0},
 		.check = check_no_args,
 		.length = length_one_byte,
 		.emit = ccf_emit,