1 files changed, 3 insertions, 1 deletions

diff --git a/src/firejail/sbox.c b/src/firejail/sbox.c
index f9c41f661..4a8dd1bf7 100644
--- a/src/firejail/sbox.c
+++ b/src/firejail/sbox.c
@@ -248,7 +248,9 @@ int sbox_run(unsigned filtermask, int num, ...) {
         va_start(valist, num);
 
         // build argument list
-        char **arg = malloc((num + 1) * sizeof(char *));
+        char **arg = calloc(num + 1, sizeof(char *));
+        if (!arg)
+                errExit("calloc");
         int i;
         for (i = 0; i < num; i++)
                 arg[i] = va_arg(valist, char *);