diff --git a/Process.h b/Process.h
index a13ca86c..440cbb1c 100644
--- a/Process.h
+++ b/Process.h
@@ -86,7 +86,7 @@ typedef struct Process_ {
 
    float percent_cpu;
    float percent_mem;
-   char* user;
+   const char* user;
 
    long int priority;
    long int nice;