diff --git a/sdk/tseal/tSeal.cpp b/sdk/tseal/tSeal.cpp
index 862c24303..e23206278 100644
--- a/sdk/tseal/tSeal.cpp
+++ b/sdk/tseal/tSeal.cpp
@@ -202,7 +202,7 @@ extern "C" sgx_status_t sgx_unseal_data(const sgx_sealed_data_t *p_sealed_data,
     {
         return SGX_ERROR_INVALID_PARAMETER;
     }
-    if (!sgx_is_within_enclave(p_decrypted_text_length, sizeof(p_decrypted_text_length)))
+    if (!sgx_is_within_enclave(p_decrypted_text_length, sizeof(*p_decrypted_text_length)))
     {
         return SGX_ERROR_INVALID_PARAMETER;
     }
@@ -217,8 +217,8 @@ extern "C" sgx_status_t sgx_unseal_data(const sgx_sealed_data_t *p_sealed_data,
     }
 
     if((p_additional_MACtext_length != NULL) && 
-       (!(sgx_is_within_enclave(p_additional_MACtext_length, sizeof(p_additional_MACtext_length)) ||
-          sgx_is_outside_enclave(p_additional_MACtext_length, sizeof(p_additional_MACtext_length)))))
+       (!(sgx_is_within_enclave(p_additional_MACtext_length, sizeof(*p_additional_MACtext_length)) ||
+          sgx_is_outside_enclave(p_additional_MACtext_length, sizeof(*p_additional_MACtext_length)))))
     {
         return SGX_ERROR_INVALID_PARAMETER;
     }
diff --git a/sdk/tseal/tSeal_aad.cpp b/sdk/tseal/tSeal_aad.cpp
index 8e2281ad4..663d428b7 100644
--- a/sdk/tseal/tSeal_aad.cpp
+++ b/sdk/tseal/tSeal_aad.cpp
@@ -196,8 +196,8 @@ extern "C" sgx_status_t sgx_unmac_aadata(const sgx_sealed_data_t *p_sealed_data,
     {
         return SGX_ERROR_INVALID_PARAMETER;
     }
-    if(!(sgx_is_within_enclave(p_additional_MACtext_length, sizeof(p_additional_MACtext_length)) ||
-        sgx_is_outside_enclave(p_additional_MACtext_length, sizeof(p_additional_MACtext_length))))
+    if(!(sgx_is_within_enclave(p_additional_MACtext_length, sizeof(*p_additional_MACtext_length)) ||
+        sgx_is_outside_enclave(p_additional_MACtext_length, sizeof(*p_additional_MACtext_length))))
     {
         return SGX_ERROR_INVALID_PARAMETER;
     }