diff --git a/i386-dis.c b/i386-dis.c
index 7b44179..de95e35 100644
--- a/i386-dis.c
+++ b/i386-dis.c
@@ -1131,63 +1131,63 @@
    need to update onebyte_has_modrm or twobyte_has_modrm.  */
 #define MODRM_CHECK  if (!need_modrm) abort ()
 
-static const char **names64;
-static const char **names32;
-static const char **names16;
-static const char **names8;
-static const char **names8rex;
-static const char **names_seg;
-static const char **index16;
+static const char * const *names64;
+static const char * const *names32;
+static const char * const *names16;
+static const char * const *names8;
+static const char * const *names8rex;
+static const char * const *names_seg;
+static const char * const *index16;
 
-static const char *intel_names64[] = {
+static const char * const intel_names64[] = {
   "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
 };
-static const char *intel_names32[] = {
+static const char * const intel_names32[] = {
   "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi",
   "r8d", "r9d", "r10d", "r11d", "r12d", "r13d", "r14d", "r15d"
 };
-static const char *intel_names16[] = {
+static const char * const intel_names16[] = {
   "ax", "cx", "dx", "bx", "sp", "bp", "si", "di",
   "r8w", "r9w", "r10w", "r11w", "r12w", "r13w", "r14w", "r15w"
 };
-static const char *intel_names8[] = {
+static const char * const intel_names8[] = {
   "al", "cl", "dl", "bl", "ah", "ch", "dh", "bh",
 };
-static const char *intel_names8rex[] = {
+static const char * const intel_names8rex[] = {
   "al", "cl", "dl", "bl", "spl", "bpl", "sil", "dil",
   "r8b", "r9b", "r10b", "r11b", "r12b", "r13b", "r14b", "r15b"
 };
-static const char *intel_names_seg[] = {
+static const char * const intel_names_seg[] = {
   "es", "cs", "ss", "ds", "fs", "gs", "?", "?",
 };
-static const char *intel_index16[] = {
+static const char * const intel_index16[] = {
   "bx+si", "bx+di", "bp+si", "bp+di", "si", "di", "bp", "bx"
 };
 
-static const char *att_names64[] = {
+static const char * const att_names64[] = {
   "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi",
   "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15"
 };
-static const char *att_names32[] = {
+static const char * const att_names32[] = {
   "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi",
   "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d"
 };
-static const char *att_names16[] = {
+static const char * const att_names16[] = {
   "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di",
   "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w"
 };
-static const char *att_names8[] = {
+static const char * const att_names8[] = {
   "%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh",
 };
-static const char *att_names8rex[] = {
+static const char * const att_names8rex[] = {
   "%al", "%cl", "%dl", "%bl", "%spl", "%bpl", "%sil", "%dil",
   "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b"
 };
-static const char *att_names_seg[] = {
+static const char * const att_names_seg[] = {
   "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "%?", "%?",
 };
-static const char *att_index16[] = {
+static const char * const att_index16[] = {
   "%bx,%si", "%bx,%di", "%bp,%si", "%bp,%di", "%si", "%di", "%bp", "%bx"
 };