diff --git a/rom/exec/debug_internal.c b/rom/exec/debug_internal.c
index 39b19cecc1..89c7c73ff6 100644
--- a/rom/exec/debug_internal.c
+++ b/rom/exec/debug_internal.c
@@ -462,11 +462,10 @@ ULONG GetL(char* string)
 {
     ULONG       ret = 0;
     int         i;
-    char        digit;
     
     for(i = 0; i < 8; i++)
     {
-        digit = toupper(string[i]);
+        char digit = toupper(string[i]);
 
         if (!isxdigit(digit))
             break;
@@ -485,11 +484,10 @@ UWORD GetW(char* string)
 {
     UWORD       ret = 0;
     int         i;
-    char        digit;
     
     for(i = 0; i < 4; i++)
     {
-        digit = toupper(string[i]);
+        char digit = toupper(string[i]);
 
         if (!isxdigit(digit))
             break;
@@ -508,11 +506,10 @@ UBYTE GetB(char* string)
 {
     UBYTE       ret = 0;
     int         i;
-    char        digit;
-    
+
     for(i = 0; i < 2; i++)
     {
-        digit = toupper(string[i]);
+        char digit = toupper(string[i]);
 
         if (!isxdigit(digit))
             break;