diff --git a/src/libstrongswan/plugins/openssl/openssl_ec_public_key.c b/src/libstrongswan/plugins/openssl/openssl_ec_public_key.c
index a290f3d05..d1b3a4e39 100644
--- a/src/libstrongswan/plugins/openssl/openssl_ec_public_key.c
+++ b/src/libstrongswan/plugins/openssl/openssl_ec_public_key.c
@@ -230,6 +230,7 @@ bool openssl_ec_fingerprint(EC_KEY *ec, key_encoding_type_t type, chunk_t *fp)
 	}
 	hasher->allocate_hash(hasher, key, fp);
 	hasher->destroy(hasher);
+	free(key.ptr);
 	lib->encoding->cache(lib->encoding, type, ec, *fp);
 	return TRUE;
 }
diff --git a/src/libstrongswan/plugins/openssl/openssl_rsa_public_key.c b/src/libstrongswan/plugins/openssl/openssl_rsa_public_key.c
index 880a4613e..c20af907a 100644
--- a/src/libstrongswan/plugins/openssl/openssl_rsa_public_key.c
+++ b/src/libstrongswan/plugins/openssl/openssl_rsa_public_key.c
@@ -205,6 +205,7 @@ bool openssl_rsa_fingerprint(RSA *rsa, key_encoding_type_t type, chunk_t *fp)
 		return FALSE;
 	}
 	hasher->allocate_hash(hasher, key, fp);
+	free(key.ptr);
 	hasher->destroy(hasher);
 	lib->encoding->cache(lib->encoding, type, rsa, *fp);
 	return TRUE;