diff --git a/features/cryptocell/FEATURE_CRYPTOCELL310/ccm_alt.c b/features/cryptocell/FEATURE_CRYPTOCELL310/ccm_alt.c
index a344aaef67..85e9897e46 100644
--- a/features/cryptocell/FEATURE_CRYPTOCELL310/ccm_alt.c
+++ b/features/cryptocell/FEATURE_CRYPTOCELL310/ccm_alt.c
@@ -59,7 +59,7 @@ int mbedtls_ccm_setkey( mbedtls_ccm_context *ctx,
         break;
         case 192:
         case 256:
-            return( MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE );
+            return( MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED );
         default:
             return( MBEDTLS_ERR_CCM_BAD_INPUT );
     }
@@ -199,7 +199,7 @@ int mbedtls_ccm_star_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length,
                                       unsigned char *output,
                                       unsigned char *tag, size_t tag_len )
 {
-    return( MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE );
+    return( MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED );
 }
 
 int mbedtls_ccm_star_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
@@ -209,7 +209,7 @@ int mbedtls_ccm_star_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
                                    unsigned char *output,
                                    const unsigned char *tag, size_t tag_len )
 {
-    return( MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE );
+    return( MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED );
 }
 
 #endif