diff --git a/src/core/arm/dyncom/arm_dyncom_dec.cpp b/src/core/arm/dyncom/arm_dyncom_dec.cpp
index 48fc1c683e..ee4288314f 100644
--- a/src/core/arm/dyncom/arm_dyncom_dec.cpp
+++ b/src/core/arm/dyncom/arm_dyncom_dec.cpp
@@ -5,7 +5,7 @@
 #include "core/arm/dyncom/arm_dyncom_dec.h"
 #include "core/arm/skyeye_common/armsupp.h"
 
-const ISEITEM arm_instruction[] = {
+const InstructionSetEncodingItem arm_instruction[] = {
     { "vmla", 4, ARMVFP2,      { 23, 27, 0x1C, 20, 21, 0x0, 9, 11, 0x5, 4, 4, 0 }},
     { "vmls", 7, ARMVFP2,      { 28, 31, 0xF, 25, 27, 0x1, 23, 23, 1, 11, 11, 0, 8, 9, 0x2, 6, 6, 1, 4, 4, 0 }},
     { "vnmla", 4, ARMVFP2,     { 23, 27, 0x1C, 20, 21, 0x1, 9, 11, 0x5, 4, 4, 0 }},
@@ -207,7 +207,7 @@ const ISEITEM arm_instruction[] = {
     { "bbl", 1, 0,         { 25, 27, 0x00000005 }},
 };
 
-const ISEITEM arm_exclusion_code[] = {
+const InstructionSetEncodingItem arm_exclusion_code[] = {
     { "vmla", 0, ARMVFP2,      { 0 }},
     { "vmls", 0, ARMVFP2,      { 0 }},
     { "vnmla", 0, ARMVFP2,     { 0 }},
@@ -417,7 +417,7 @@ const ISEITEM arm_exclusion_code[] = {
 ARMDecodeStatus DecodeARMInstruction(u32 instr, s32* idx) {
     int n = 0;
     int base = 0;
-    int instr_slots = sizeof(arm_instruction) / sizeof(ISEITEM);
+    int instr_slots = sizeof(arm_instruction) / sizeof(InstructionSetEncodingItem);
     ARMDecodeStatus ret = ARMDecodeStatus::FAILURE;
 
     for (int i = 0; i < instr_slots; i++) {
diff --git a/src/core/arm/dyncom/arm_dyncom_dec.h b/src/core/arm/dyncom/arm_dyncom_dec.h
index 80d9102182..d7170e0fcc 100644
--- a/src/core/arm/dyncom/arm_dyncom_dec.h
+++ b/src/core/arm/dyncom/arm_dyncom_dec.h
@@ -13,15 +13,13 @@ enum class ARMDecodeStatus {
 
 ARMDecodeStatus DecodeARMInstruction(u32 instr, s32* idx);
 
-struct instruction_set_encoding_item {
+struct InstructionSetEncodingItem {
     const char *name;
     int attribute_value;
     int version;
     u32 content[21];
 };
 
-typedef struct instruction_set_encoding_item ISEITEM;
-
 // ARM versions
 enum {
     INVALID = 0,
@@ -38,4 +36,4 @@ enum {
     ARMV6K,
 };
 
-extern const ISEITEM arm_instruction[];
+extern const InstructionSetEncodingItem arm_instruction[];