diff --git a/proc/pids.c b/proc/pids.c
index adaf477e..23c97af8 100644
--- a/proc/pids.c
+++ b/proc/pids.c
@@ -180,7 +180,7 @@ REG_set(ID_SUID,          u_int,   suid)
 REG_set(ID_SUSER,         str,     suser)
 REG_set(ID_TGID,          s_int,   tgid)
 REG_set(ID_TPGID,         s_int,   tpgid)
-setDECL(LXCNAME)      { (void)I; R->result.str = (char *)P->lxcname; }
+REG_set(LXCNAME,          str,     lxcname)
 REG_set(MEM_CODE,         sl_int,  trs)
 CVT_set(MEM_CODE_KIB,     sl_int,  trs)
 REG_set(MEM_DATA,         sl_int,  drs)
@@ -406,29 +406,29 @@ static struct {
     { RS(FLT_MIN),           f_stat,     NULL,      QS(sl_int),    0        },
     { RS(FLT_MIN_C),         f_stat,     NULL,      QS(sl_int),    0        },
     { RS(FLT_MIN_DELTA),     f_stat,     NULL,      QS(sl_int),    +1       },
-    { RS(ID_EGID),           0,          NULL,      QS(u_int),     0        }, // oldflags: free w/ simple_read...
+    { RS(ID_EGID),           0,          NULL,      QS(u_int),     0        }, // oldflags: free w/ simple_read
     { RS(ID_EGROUP),         f_grp,      NULL,      QS(str),       0        },
-    { RS(ID_EUID),           0,          NULL,      QS(u_int),     0        }, // oldflags: free w/ simple_read...
-    { RS(ID_EUSER),          f_usr,      NULL,      QS(str),       0        },
+    { RS(ID_EUID),           0,          NULL,      QS(u_int),     0        }, // oldflags: free w/ simple_read
+    { RS(ID_EUSER),          f_usr,      NULL,      QS(str),       0        }, // freefunc NULL w/ cached string
     { RS(ID_FGID),           f_status,   NULL,      QS(u_int),     0        },
     { RS(ID_FGROUP),         x_ogroup,   NULL,      QS(str),       0        },
     { RS(ID_FUID),           f_status,   NULL,      QS(u_int),     0        },
-    { RS(ID_FUSER),          x_ouser,    NULL,      QS(str),       0        },
+    { RS(ID_FUSER),          x_ouser,    NULL,      QS(str),       0        }, // freefunc NULL w/ cached string
     { RS(ID_PGRP),           f_stat,     NULL,      QS(s_int),     0        },
     { RS(ID_PID),            0,          NULL,      QS(s_int),     0        }, // oldflags: free w/ simple_nextpid
     { RS(ID_PPID),           f_either,   NULL,      QS(s_int),     0        },
     { RS(ID_RGID),           f_status,   NULL,      QS(u_int),     0        },
     { RS(ID_RGROUP),         x_ogroup,   NULL,      QS(str),       0        },
     { RS(ID_RUID),           f_status,   NULL,      QS(u_int),     0        },
-    { RS(ID_RUSER),          x_ouser,    NULL,      QS(str),       0        },
+    { RS(ID_RUSER),          x_ouser,    NULL,      QS(str),       0        }, // freefunc NULL w/ cached string
     { RS(ID_SESSION),        f_stat,     NULL,      QS(s_int),     0        },
     { RS(ID_SGID),           f_status,   NULL,      QS(u_int),     0        },
     { RS(ID_SGROUP),         x_ogroup,   NULL,      QS(str),       0        },
     { RS(ID_SUID),           f_status,   NULL,      QS(u_int),     0        },
-    { RS(ID_SUSER),          x_ouser,    NULL,      QS(str),       0        },
+    { RS(ID_SUSER),          x_ouser,    NULL,      QS(str),       0        }, // freefunc NULL w/ cached string
     { RS(ID_TGID),           0,          NULL,      QS(s_int),     0        }, // oldflags: free w/ simple_nextpid
     { RS(ID_TPGID),          f_stat,     NULL,      QS(s_int),     0        },
-    { RS(LXCNAME),           f_lxc,      NULL,      QS(str),       0        },
+    { RS(LXCNAME),           f_lxc,      NULL,      QS(str),       0        }, // freefunc NULL w/ cached string
     { RS(MEM_CODE),          f_statm,    NULL,      QS(sl_int),    0        },
     { RS(MEM_CODE_KIB),      f_statm,    NULL,      QS(sl_int),    0        },
     { RS(MEM_DATA),          f_statm,    NULL,      QS(sl_int),    0        },
diff --git a/proc/readproc.c b/proc/readproc.c
index 98d3da14..a434be03 100644
--- a/proc/readproc.c
+++ b/proc/readproc.c
@@ -775,7 +775,7 @@ static void fill_environ_cvt (const char* directory, proc_t *restrict p) {
     // Provide the means to value proc_t.lxcname (perhaps only with "-") while
     // tracking all names already seen thus avoiding the overhead of repeating
     // malloc() and free() calls.
-static const char *lxc_containers (const char *path) {
+static char *lxc_containers (const char *path) {
     static struct utlbuf_s ub = { NULL, 0 };   // util buffer for whole cgroup
     static char lxc_none[] = "-";
     /*
@@ -800,7 +800,7 @@ static const char *lxc_containers (const char *path) {
         if ((p1 = strstr(ub.buf, lxc_delm))) {
             static struct lxc_ele {
                 struct lxc_ele *next;
-                const char *name;
+                char *name;
             } *anchor = NULL;
             struct lxc_ele *ele = anchor;
             char *p2;
diff --git a/proc/readproc.h b/proc/readproc.h
index 65e771c6..647c8578 100644
--- a/proc/readproc.h
+++ b/proc/readproc.h
@@ -169,7 +169,7 @@ typedef struct proc_t {
         *sd_slice,      // n/a             systemd slice unit
         *sd_unit,       // n/a             systemd system unit id
         *sd_uunit;      // n/a             systemd user unit id
-    const char
+    char
         *lxcname;       // n/a             lxc container name
 } proc_t;