3 files changed, 3 insertions, 3 deletions
diff --git a/src/shared/cgroup-util.c b/src/shared/cgroup-util.c
index 06eb453d1a..9d50890adc 100644
--- a/src/shared/cgroup-util.c
+++ b/src/shared/cgroup-util.c
@@ -509,7 +509,7 @@ static int check_hierarchy(const char *p) {
         assert(p);
 
         /* Check if this controller actually really exists */
-        cc = alloca(sizeof("/sys/fs/cgroup/") + strlen(p));
+        cc = alloca(strlen("/sys/fs/cgroup/") + strlen(p) + 1);
         strcpy(stpcpy(cc, "/sys/fs/cgroup/"), p);
         if (access(cc, F_OK) < 0)
                 return -errno;
diff --git a/src/shared/unit-name.c b/src/shared/unit-name.c
index e9b0636143..6c167b4331 100644
--- a/src/shared/unit-name.c
+++ b/src/shared/unit-name.c
@@ -493,7 +493,7 @@ char *unit_name_mangle(const char *name, enum unit_name_mangle allow_globs) {
         /* We'll only escape the obvious characters here, to play
          * safe. */
 
-        r = new(char, strlen(name) * 4 + 1 + sizeof(".service")-1);
+        r = new(char, strlen(name) * 4 + strlen(".service") + 1);
         if (!r)
                 return NULL;
 
diff --git a/src/shared/util.c b/src/shared/util.c
index 7e17851fcd..75870fcbe2 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -4185,7 +4185,7 @@ int socket_from_display(const char *display, char **path) {
 
         k = strspn(display+1, "0123456789");
 
-        f = new(char, sizeof("/tmp/.X11-unix/X") + k);
+        f = new(char, strlen("/tmp/.X11-unix/X") + k + 1);
         if (!f)
                 return -ENOMEM;