diff --git a/src/slot.c b/src/slot.c
index ddab71ec..8974fb3b 100644
--- a/src/slot.c
+++ b/src/slot.c
@@ -187,11 +187,13 @@ CK_RV p11prov_init_slots(P11PROV_CTX *ctx, P11PROV_SLOTS_CTX **slots)
         ret = p11prov_GetSlotInfo(ctx, slotid[i], &slot->slot);
         if (ret != CKR_OK || (slot->slot.flags & CKF_TOKEN_PRESENT) == 0) {
             /* skip slot */
+            OPENSSL_free(slot);
             continue;
         }
         ret = p11prov_GetTokenInfo(ctx, slotid[i], &slot->token);
         if (ret) {
             /* skip slot */
+            OPENSSL_free(slot);
             continue;
         }