diff --git a/sources.bp b/sources.bp
index b6ba434..8eb9ddc 100644
--- a/sources.bp
+++ b/sources.bp
@@ -97,6 +97,7 @@
         "src/crypto/dsa/dsa.c",
         "src/crypto/dsa/dsa_asn1.c",
         "src/crypto/ec_extra/ec_asn1.c",
+        "src/crypto/ec_extra/ec_derive.c",
         "src/crypto/ecdh_extra/ecdh_extra.c",
         "src/crypto/ecdsa_extra/ecdsa_asn1.c",
         "src/crypto/engine/engine.c",