diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index b592c6e..93bb9cc 100755
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -589,9 +589,9 @@
     size_t input_size;
     unsigned char *output_data = NULL;
     size_t output_size = 0;
-    size_t output_length;
+    size_t output_length = 0;
     unsigned char *output_data2 = NULL;
-    size_t output_length2;
+    size_t output_length2 = 0;
     uint8_t nonce[16];
     size_t nonce_length = 16;
     size_t tag_length = 16;
@@ -629,19 +629,20 @@
                                input_data, input_size, output_data,
                                output_size, &output_length ) == expected_result );
 
-    output_data2 = mbedtls_calloc( 1, output_length );
-    TEST_ASSERT( output_data2 != NULL );
-
-    TEST_ASSERT( psa_aead_decrypt( slot, alg,
-                            nonce, nonce_length,
-                            additional_data, additional_data_length,
-                            output_data, output_length - tag_length, output_data2,
-                            output_length, &output_length2 ) == expected_result );
-    
     if( PSA_SUCCESS == expected_result )
     {
+        output_data2 = mbedtls_calloc( 1, output_length );
+        TEST_ASSERT( output_data2 != NULL );
+
+        TEST_ASSERT( psa_aead_decrypt( slot, alg,
+                                nonce, nonce_length,
+                                additional_data, additional_data_length,
+                                output_data, output_length - tag_length, output_data2,
+                                output_length, &output_length2 ) == expected_result );
+        
+
         TEST_ASSERT( memcmp( input_data, output_data2,
-                             input_size ) == 0 );
+                                input_size ) == 0 );
     }