diff --git a/system/stringhelpers.c b/system/stringhelpers.c
--- a/system/stringhelpers.c
+++ b/system/stringhelpers.c
@@ -1,8 +1,9 @@
 #include <inttypes.h>
 
+char const digit[] = "0123456789";
+
 char* zitoa(int16_t i, char b[]){
 
-    char const digit[] = "0123456789";
     char* p = b;
     if(i<0){
         *p++ = '-';
@@ -22,7 +23,6 @@ char* zitoa(int16_t i, char b[]){
 }
 
 char* itoa_fp(int16_t i, uint8_t frac, char b[]){
-    char const digit[] = "0123456789";
 
     // set p to beginning of char array
     char* p = b;