diff --git a/MCUME_pico2/pico64/c64.cpp b/MCUME_pico2/pico64/c64.cpp
index 9dadd15..3532951 100644
--- a/MCUME_pico2/pico64/c64.cpp
+++ b/MCUME_pico2/pico64/c64.cpp
@@ -290,8 +290,8 @@ static uint8_t nbkeys = 0;
 static uint8_t kcnt = 0;
 static bool toggle = true;
 
-static char * textseq;
-static char * textload = "LOAD\"\"\r\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tRUN\r";
+static const char * textseq;
+static const char * textload = "LOAD\"\"\r\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tRUN\r";
 static char textkey[1];
 
 static bool res=false;