diff --git a/src/shared/logs-show.c b/src/shared/logs-show.c
index 33afbe2f7f..6a6fc1fe24 100644
--- a/src/shared/logs-show.c
+++ b/src/shared/logs-show.c
@@ -374,7 +374,7 @@ static int output_short(
                 unsigned n_columns,
                 OutputFlags flags,
                 Set *output_fields,
-                size_t highlight[2]) {
+                const size_t highlight[2]) {
 
         int r;
         const void *data;
@@ -505,7 +505,7 @@ static int output_verbose(
                 unsigned n_columns,
                 OutputFlags flags,
                 Set *output_fields,
-                size_t highlight[2]) {
+                const size_t highlight[2]) {
 
         const void *data;
         size_t length;
@@ -613,7 +613,7 @@ static int output_export(
                 unsigned n_columns,
                 OutputFlags flags,
                 Set *output_fields,
-                size_t highlight[2]) {
+                const size_t highlight[2]) {
 
         sd_id128_t boot_id;
         char sid[33];
@@ -754,7 +754,7 @@ static int output_json(
                 unsigned n_columns,
                 OutputFlags flags,
                 Set *output_fields,
-                size_t highlight[2]) {
+                const size_t highlight[2]) {
 
         uint64_t realtime, monotonic;
         _cleanup_free_ char *cursor = NULL;
@@ -968,7 +968,7 @@ static int output_cat(
                 unsigned n_columns,
                 OutputFlags flags,
                 Set *output_fields,
-                size_t highlight[2]) {
+                const size_t highlight[2]) {
 
         const void *data;
         size_t l;
@@ -1023,7 +1023,7 @@ static int (*output_funcs[_OUTPUT_MODE_MAX])(
                 unsigned n_columns,
                 OutputFlags flags,
                 Set *output_fields,
-                size_t highlight[2]) = {
+                const size_t highlight[2]) = {
 
         [OUTPUT_SHORT] = output_short,
         [OUTPUT_SHORT_ISO] = output_short,
@@ -1048,7 +1048,7 @@ int show_journal_entry(
                 unsigned n_columns,
                 OutputFlags flags,
                 char **output_fields,
-                size_t highlight[2],
+                const size_t highlight[2],
                 bool *ellipsized) {
 
         int ret;
diff --git a/src/shared/logs-show.h b/src/shared/logs-show.h
index 002d06af84..1e0c4ea146 100644
--- a/src/shared/logs-show.h
+++ b/src/shared/logs-show.h
@@ -20,7 +20,7 @@ int show_journal_entry(
                 unsigned n_columns,
                 OutputFlags flags,
                 char **output_fields,
-                size_t highlight[2],
+                const size_t highlight[2],
                 bool *ellipsized);
 int show_journal(
                 FILE *f,