diff --git a/arch/AArch64/AArch64Mapping.c b/arch/AArch64/AArch64Mapping.c
index 58c14ef983..1233668df8 100644
--- a/arch/AArch64/AArch64Mapping.c
+++ b/arch/AArch64/AArch64Mapping.c
@@ -840,28 +840,20 @@ static name_map group_name_maps[] = {
 	{ ARM64_GRP_JUMP, "jump" },
 	{ ARM64_GRP_CALL, "call" },
 	{ ARM64_GRP_RET, "return" },
+	{ ARM64_GRP_PRIVILEGE, "privilege" },
 
 	// architecture-specific groups
 	{ ARM64_GRP_CRYPTO, "crypto" },
 	{ ARM64_GRP_FPARMV8, "fparmv8" },
 	{ ARM64_GRP_NEON, "neon" },
 	{ ARM64_GRP_CRC, "crc" },
-
 };
 #endif
 
 const char *AArch64_group_name(csh handle, unsigned int id)
 {
 #ifndef CAPSTONE_DIET
-	// verify group id
-	if (id >= ARM64_GRP_ENDING || (id > ARM64_GRP_RET && id < ARM64_GRP_CRYPTO))
-		return NULL;
-
-	// NOTE: when new generic groups are added, 4 must be changed accordingly
-	if (id >= ARM64_GRP_CRYPTO)
-		return group_name_maps[id - ARM64_GRP_CRYPTO + 4].name;
-	else
-		return group_name_maps[id].name;
+	return id2name(group_name_maps, ARR_SIZE(group_name_maps), id);
 #else
 	return NULL;
 #endif
diff --git a/arch/ARM/ARMMapping.c b/arch/ARM/ARMMapping.c
index 37895bb984..1050e04e50 100644
--- a/arch/ARM/ARMMapping.c
+++ b/arch/ARM/ARMMapping.c
@@ -768,6 +768,7 @@ static name_map group_name_maps[] = {
 	// generic groups
 	{ ARM_GRP_INVALID, NULL },
 	{ ARM_GRP_JUMP,	"jump" },
+	{ ARM_GRP_PRIVILEGE, "privilege" },
 
 	// architecture-specific groups
 	{ ARM_GRP_CRYPTO, "crypto" },
@@ -808,15 +809,7 @@ static name_map group_name_maps[] = {
 const char *ARM_group_name(csh handle, unsigned int id)
 {
 #ifndef CAPSTONE_DIET
-	// verify group id
-	if (id >= ARM_GRP_ENDING || (id > ARM_GRP_JUMP && id < ARM_GRP_CRYPTO))
-		return NULL;
-
-	// NOTE: when new generic groups are added, 2 must be changed accordingly
-	if (id >= ARM_GRP_CRYPTO)
-		return group_name_maps[id - ARM_GRP_CRYPTO + 2].name;
-	else
-		return group_name_maps[id].name;
+	return id2name(group_name_maps, ARR_SIZE(group_name_maps), id);
 #else
 	return NULL;
 #endif
diff --git a/arch/Mips/MipsMapping.c b/arch/Mips/MipsMapping.c
index 2fed993f5f..f9005eee0d 100644
--- a/arch/Mips/MipsMapping.c
+++ b/arch/Mips/MipsMapping.c
@@ -991,15 +991,7 @@ static name_map group_name_maps[] = {
 const char *Mips_group_name(csh handle, unsigned int id)
 {
 #ifndef CAPSTONE_DIET
-	// verify group id
-	if (id >= MIPS_GRP_ENDING || (id > MIPS_GRP_JUMP && id < MIPS_GRP_BITCOUNT))
-		return NULL;
-
-	// NOTE: when new generic groups are added, 2 must be changed accordingly
-	if (id >= 128)
-		return group_name_maps[id - 128 + 2].name;
-	else
-		return group_name_maps[id].name;
+	return id2name(group_name_maps, ARR_SIZE(group_name_maps), id);
 #else
 	return NULL;
 #endif
diff --git a/arch/PowerPC/PPCMapping.c b/arch/PowerPC/PPCMapping.c
index 56439d2b23..085d85f6bc 100644
--- a/arch/PowerPC/PPCMapping.c
+++ b/arch/PowerPC/PPCMapping.c
@@ -1462,15 +1462,7 @@ static name_map group_name_maps[] = {
 const char *PPC_group_name(csh handle, unsigned int id)
 {
 #ifndef CAPSTONE_DIET
-	// verify group id
-	if (id >= PPC_GRP_ENDING || (id > PPC_GRP_JUMP && id < PPC_GRP_ALTIVEC))
-		return NULL;
-
-	// NOTE: when new generic groups are added, 2 must be changed accordingly
-	if (id >= PPC_GRP_ALTIVEC)
-		return group_name_maps[id - PPC_GRP_ALTIVEC + 2].name;
-	else
-		return group_name_maps[id].name;
+	return id2name(group_name_maps, ARR_SIZE(group_name_maps), id);
 #else
 	return NULL;
 #endif
diff --git a/arch/Sparc/SparcMapping.c b/arch/Sparc/SparcMapping.c
index eeaf2c9a68..0f70ff0c8e 100644
--- a/arch/Sparc/SparcMapping.c
+++ b/arch/Sparc/SparcMapping.c
@@ -526,15 +526,7 @@ static name_map group_name_maps[] = {
 const char *Sparc_group_name(csh handle, unsigned int id)
 {
 #ifndef CAPSTONE_DIET
-	// verify group id
-	if (id >= SPARC_GRP_ENDING || (id > SPARC_GRP_JUMP && id < SPARC_GRP_HARDQUAD))
-		return NULL;
-
-	// NOTE: when new generic groups are added, 2 must be changed accordingly
-	if (id >= 128)
-		return group_name_maps[id - 128 + 2].name;
-	else
-		return group_name_maps[id].name;
+	return id2name(group_name_maps, ARR_SIZE(group_name_maps), id);
 #else
 	return NULL;
 #endif
diff --git a/arch/SystemZ/SystemZMapping.c b/arch/SystemZ/SystemZMapping.c
index f841c14ade..c32ec1a3dd 100644
--- a/arch/SystemZ/SystemZMapping.c
+++ b/arch/SystemZ/SystemZMapping.c
@@ -839,15 +839,7 @@ static name_map group_name_maps[] = {
 const char *SystemZ_group_name(csh handle, unsigned int id)
 {
 #ifndef CAPSTONE_DIET
-	// verify group id
-	if (id >= SYSZ_GRP_ENDING || (id > SYSZ_GRP_JUMP && id < SYSZ_GRP_DISTINCTOPS))
-		return NULL;
-
-	// NOTE: when new generic groups are added, 2 must be changed accordingly
-	if (id >= 128)
-		return group_name_maps[id - 128 + 2].name;
-	else
-		return group_name_maps[id].name;
+	return id2name(group_name_maps, ARR_SIZE(group_name_maps), id);
 #else
 	return NULL;
 #endif
diff --git a/arch/X86/X86Mapping.c b/arch/X86/X86Mapping.c
index 6dee30f119..f766d151a7 100644
--- a/arch/X86/X86Mapping.c
+++ b/arch/X86/X86Mapping.c
@@ -2200,6 +2200,7 @@ static name_map group_name_maps[] = {
 	{ X86_GRP_RET, "ret" },
 	{ X86_GRP_INT, "int" },
 	{ X86_GRP_IRET,	"iret" },
+	{ X86_GRP_PRIVILEGE, "privilege" },
 
 	// architecture-specific groups
 	{ X86_GRP_VM, "vm" },
@@ -2249,15 +2250,7 @@ static name_map group_name_maps[] = {
 const char *X86_group_name(csh handle, unsigned int id)
 {
 #ifndef CAPSTONE_DIET
-	// verify group id
-	if (id >= X86_GRP_ENDING || (id > X86_GRP_IRET && id < X86_GRP_VM))
-		return NULL;
-
-	// NOTE: when new generic groups are added, 6 must be changed accordingly
-	if (id >= 128)
-		return group_name_maps[id - 128 + 6].name;
-	else
-		return group_name_maps[id].name;
+	return id2name(group_name_maps, ARR_SIZE(group_name_maps), id);
 #else
 	return NULL;
 #endif
diff --git a/arch/XCore/XCoreMapping.c b/arch/XCore/XCoreMapping.c
index 11c09ecbb2..8c86eb8a80 100644
--- a/arch/XCore/XCoreMapping.c
+++ b/arch/XCore/XCoreMapping.c
@@ -275,10 +275,7 @@ static name_map group_name_maps[] = {
 const char *XCore_group_name(csh handle, unsigned int id)
 {
 #ifndef CAPSTONE_DIET
-	if (id >= XCORE_GRP_ENDING)
-		return NULL;
-
-	return group_name_maps[id].name;
+	return id2name(group_name_maps, ARR_SIZE(group_name_maps), id);
 #else
 	return NULL;
 #endif
diff --git a/suite/test_group_name.py b/suite/test_group_name.py
index 0bccd32835..61c32c97c2 100755
--- a/suite/test_group_name.py
+++ b/suite/test_group_name.py
@@ -29,7 +29,7 @@ def run(self):
             name = self.data.get(group_id)
             res = _cs.cs_group_name(cap.csh, group_id)
             if res != name:
-                print("ERROR: expected '%s', but got '%s'" %(name, res))
+                print("ERROR: id = %u expected '%s', but got '%s'" %(group_id, name, res))
         print("")
 
 arm_dict = {
diff --git a/utils.c b/utils.c
index d2f5fdcb20..ca2a7ecf47 100644
--- a/utils.c
+++ b/utils.c
@@ -52,6 +52,20 @@ int name2id(name_map* map, int max, const char *name)
 	return -1;
 }
 
+char *id2name(name_map* map, int max, const unsigned int id)
+{
+	int i;
+
+	for (i = 0; i < max; i++) {
+		if (map[i].id == id) {
+			return map[i].name;
+		}
+	}
+
+	// nothing match
+	return NULL;
+}
+
 // count number of positive members in a list.
 // NOTE: list must be guaranteed to end in 0
 unsigned int count_positive(uint16_t *list)
diff --git a/utils.h b/utils.h
index f52fdb5dad..3df23b7dff 100644
--- a/utils.h
+++ b/utils.h
@@ -38,6 +38,10 @@ typedef struct name_map {
 // return 0 if not found
 int name2id(name_map* map, int max, const char *name);
 
+// map ID to a name
+// return NULL if not found
+char *id2name(name_map* map, int max, const unsigned int id);
+
 // count number of positive members in a list.
 // NOTE: list must be guaranteed to end in 0
 unsigned int count_positive(uint16_t *list);