diff --git a/src/esp32.cpp b/src/esp32.cpp
index 3774401..fccc8a0 100644
--- a/src/esp32.cpp
+++ b/src/esp32.cpp
@@ -447,7 +447,7 @@ static int ESP32Open(
   //p->fd = open(zName, oflags, 0600);
   //p->fd = open(zName, oflags, S_IRUSR | S_IWUSR);
   p->fp = fopen(zName, mode);
-  if( p->fp<=0){
+  if( p->fp == (void *)NULL ) {
     if (aBuf)
       sqlite3_free(aBuf);
     //Serial.println("Can't open");
@@ -489,7 +489,7 @@ static int ESP32Delete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){
 
     /* Open a file-descriptor on the directory. Sync. Close. */
     dfd = fopen(zDir, "r");
-    if( dfd<=0 ){
+    if( dfd == (void *)NULL ){
       rc = -1;
     }else{
       rc = fflush(dfd);
diff --git a/src/shox96_0_2.cpp b/src/shox96_0_2.cpp
index d6cf987..95d4556 100755
--- a/src/shox96_0_2.cpp
+++ b/src/shox96_0_2.cpp
@@ -33,10 +33,10 @@
 
 typedef unsigned char byte;
 
-unsigned int  c_95[95] = {16384, 16256, 15744, 16192, 15328, 15344, 15360, 16064, 15264, 15296, 15712, 15200, 14976, 15040, 14848, 15104, 14528, 14592, 14656, 14688, 14720, 14752, 14784, 14816, 14832, 14464, 15552, 15488, 15616, 15168, 15680, 16000, 15872, 10752,  8576,  8192,  8320,  9728,  8672,  8608,  8384, 11264,  9024,  8992, 12160,  8544, 11520, 11008,  8512,  9008, 12032, 11776, 10240,  8448,  8960,  8640,  9040,  8688,  9048, 15840, 16288, 15856, 16128, 16224, 16368, 40960,  6144,     0,  2048, 24576,  7680,  6656,  3072, 49152, 13312, 12800, 63488,  5632, 53248, 45056,  5120, 13056, 61440, 57344, 32768,  4096, 12288,  7168, 13568,  7936, 13696, 15776, 16320, 15808, 16352};
-unsigned char l_95[95] = {    3,    11,    11,    11,    12,    12,     9,    10,    11,    11,    11,    11,    10,    10,     9,    10,    10,    10,    11,    11,    11,    11,    11,    12,    12,    10,    10,    10,    10,    11,    11,    10,     9,     8,    11,     9,    10,     7,    12,    11,    10,     8,    12,    12,     9,    11,     8,     8,    11,    12,     9,     8,     7,    10,    11,    11,    13,    12,    13,    12,    11,    12,    10,    11,    12,     4,     7,     5,     6,     3,     8,     7,     6,     4,     8,     8,     5,     7,     4,     4,     7,     8,     5,     4,     3,     6,     7,     7,     9,     8,     9,    11,    11,    11,    12};
+static unsigned int  c_95[95] = {16384, 16256, 15744, 16192, 15328, 15344, 15360, 16064, 15264, 15296, 15712, 15200, 14976, 15040, 14848, 15104, 14528, 14592, 14656, 14688, 14720, 14752, 14784, 14816, 14832, 14464, 15552, 15488, 15616, 15168, 15680, 16000, 15872, 10752,  8576,  8192,  8320,  9728,  8672,  8608,  8384, 11264,  9024,  8992, 12160,  8544, 11520, 11008,  8512,  9008, 12032, 11776, 10240,  8448,  8960,  8640,  9040,  8688,  9048, 15840, 16288, 15856, 16128, 16224, 16368, 40960,  6144,     0,  2048, 24576,  7680,  6656,  3072, 49152, 13312, 12800, 63488,  5632, 53248, 45056,  5120, 13056, 61440, 57344, 32768,  4096, 12288,  7168, 13568,  7936, 13696, 15776, 16320, 15808, 16352};
+static unsigned char l_95[95] = {    3,    11,    11,    11,    12,    12,     9,    10,    11,    11,    11,    11,    10,    10,     9,    10,    10,    10,    11,    11,    11,    11,    11,    12,    12,    10,    10,    10,    10,    11,    11,    10,     9,     8,    11,     9,    10,     7,    12,    11,    10,     8,    12,    12,     9,    11,     8,     8,    11,    12,     9,     8,     7,    10,    11,    11,    13,    12,    13,    12,    11,    12,    10,    11,    12,     4,     7,     5,     6,     3,     8,     7,     6,     4,     8,     8,     5,     7,     4,     4,     7,     8,     5,     4,     3,     6,     7,     7,     9,     8,     9,    11,    11,    11,    12};
 //unsigned char c[]    = {  ' ',   '!',   '"',   '#',   '$',   '%',   '&',  '\'',   '(',   ')',   '*',   '+',   ',',   '-',   '.',   '/',   '0',   '1',   '2',   '3',   '4',   '5',   '6',   '7',   '8',   '9',   ':',   ';',   '<',   '=',   '>',   '?',   '@',   'A',   'B',   'C',   'D',   'E',   'F',   'G',   'H',   'I',   'J',   'K',   'L',   'M',   'N',   'O',   'P',   'Q',   'R',   'S',   'T',   'U',   'V',   'W',   'X',   'Y',   'Z',   '[',  '\\',   ']',   '^',   '_',   '`',   'a',   'b',   'c',   'd',   'e',   'f',   'g',   'h',   'i',   'j',   'k',   'l',   'm',   'n',   'o',   'p',   'q',   'r',   's',   't',   'u',   'v',   'w',   'x',   'y',   'z',   '{',   '|',   '}',   '~'};
-char SET2_STR[] = {'9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '.', ',', '-', '/', '=', '+', ' ', '(', ')', '$', '%', '&', ';', ':', '<', '>', '*', '"', '{', '}', '[', ']', '@', '?', '\'', '^', '#', '_', '!', '\\', '|', '~', '`', '\0'};
+static char SET2_STR[] = {'9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '.', ',', '-', '/', '=', '+', ' ', '(', ')', '$', '%', '&', ';', ':', '<', '>', '*', '"', '{', '}', '[', ']', '@', '?', '\'', '^', '#', '_', '!', '\\', '|', '~', '`', '\0'};
 
 enum {SHX_STATE_1 = 1, SHX_STATE_2};