diff --git a/src/core/mount.c b/src/core/mount.c
index 76883475a2..914458f8e6 100644
--- a/src/core/mount.c
+++ b/src/core/mount.c
@@ -709,7 +709,7 @@ static int mount_coldplug(Unit *u) {
 }
 
 static void mount_dump(Unit *u, FILE *f, const char *prefix) {
-        char buf[FORMAT_TIMESPAN_MAX] = {};
+        char buf[FORMAT_TIMESPAN_MAX];
         Mount *m = MOUNT(u);
         MountParameters *p;
 
diff --git a/src/core/service.c b/src/core/service.c
index ff0a82864f..9e19fb0216 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -774,8 +774,8 @@ static int service_load(Unit *u) {
 }
 
 static void service_dump(Unit *u, FILE *f, const char *prefix) {
-        char buf_restart[FORMAT_TIMESPAN_MAX] = {}, buf_start[FORMAT_TIMESPAN_MAX] = {}, buf_stop[FORMAT_TIMESPAN_MAX] = {};
-        char buf_runtime[FORMAT_TIMESPAN_MAX] = {}, buf_watchdog[FORMAT_TIMESPAN_MAX] = {};
+        char buf_restart[FORMAT_TIMESPAN_MAX], buf_start[FORMAT_TIMESPAN_MAX], buf_stop[FORMAT_TIMESPAN_MAX];
+        char buf_runtime[FORMAT_TIMESPAN_MAX], buf_watchdog[FORMAT_TIMESPAN_MAX];
         ServiceExecCommand c;
         Service *s = SERVICE(u);
         const char *prefix2;
diff --git a/src/core/swap.c b/src/core/swap.c
index 3b234c2212..fffd8d4627 100644
--- a/src/core/swap.c
+++ b/src/core/swap.c
@@ -559,7 +559,7 @@ static int swap_coldplug(Unit *u) {
 }
 
 static void swap_dump(Unit *u, FILE *f, const char *prefix) {
-        char buf[FORMAT_TIMESPAN_MAX] = {};
+        char buf[FORMAT_TIMESPAN_MAX];
         Swap *s = SWAP(u);
         SwapParameters *p;