diff --git a/src/dc_pgp.h b/src/dc_pgp.h
index 0a3dad89..138e3478 100644
--- a/src/dc_pgp.h
+++ b/src/dc_pgp.h
@@ -21,7 +21,7 @@ void dc_pgp_rand_seed        (dc_context_t*, const void* buf, size_t bytes);
 int  dc_split_armored_data  (char* buf, const char** ret_headerline, const char** ret_setupcodebegin, const char** ret_preferencrypt, const char** ret_base64);
 
 /* public key encryption */
-#define DC_KEYGEN_BITS  3072
+#define DC_KEYGEN_BITS  2048
 #define DC_KEYGEN_E    65537
 int  dc_pgp_create_keypair   (dc_context_t*, const char* addr, dc_key_t* public_key, dc_key_t* private_key);