diff --git a/src/perm_permissions_table.c b/src/perm_permissions_table.c
index e1bcd98..dc088ff 100644
--- a/src/perm_permissions_table.c
+++ b/src/perm_permissions_table.c
@@ -207,6 +207,9 @@ void destroy_perm_permissions_table(void) { sqlite3_close(perm_database); }
  */
 access_t check_perm_access_noparent(const char *filename,
                                     struct process_info pi) {
+  if (pi.name == NULL)
+    return NDEF;
+
   access_t ret = NDEF;
   sqlite3_stmt *stmt = NULL;
   const char *sql = "SELECT mode FROM permissions WHERE executable = ?1 "
diff --git a/src/temp_permissions_table.c b/src/temp_permissions_table.c
index 13f471e..f483d2c 100644
--- a/src/temp_permissions_table.c
+++ b/src/temp_permissions_table.c
@@ -254,6 +254,8 @@ access_t check_temp_access(const char *filename, struct process_info pi) {
  */
 int set_temp_access(const char *filename, struct process_info pi,
                     set_mode_t mode) {
+  if (pi.PID == 0)
+    return NDEF;
   pthread_rwlock_wrlock(&temp_permissions_table_lock);
   struct temp_process_permissions *permission_entry =
       get(&temp_permissions_table, pi.PID);