diff --git a/src/tss2-fapi/ifapi_curl.c b/src/tss2-fapi/ifapi_curl.c
index d26f626da..37f20239d 100644
--- a/src/tss2-fapi/ifapi_curl.c
+++ b/src/tss2-fapi/ifapi_curl.c
@@ -9,13 +9,18 @@
 #include <openssl/obj_mac.h>    // for NID_crl_distribution_points, NID_info...
 #include <openssl/pem.h>        // for PEM_read_bio_X509
 #include <openssl/safestack.h>  // for STACK_OF
-#include <openssl/types.h>      // for X509, ASN1_IA5STRING, X509_CRL, DIST_...
 #include <openssl/x509.h>       // for X509_free, X509_STORE_add_cert, X509_...
 #include <openssl/x509v3.h>     // for DIST_POINT_NAME, GENERAL_NAME, ACCESS...
 #include <stdbool.h>            // for bool, false, true
 #include <stdlib.h>             // for free, realloc
 #include <string.h>             // for memcpy, strdup, strlen
 
+#if OPENSSL_VERSION_NUMBER < 0x30000000L
+#include <openssl/aes.h>
+#else
+#include <openssl/types.h>      // for X509, ASN1_IA5STRING, X509_CRL, DIST_...
+#endif
+
 #include "fapi_certificates.h"  // for root_cert_list
 #include "fapi_int.h"           // for OSSL_FREE
 #include "ifapi_curl.h"