diff --git a/src/dc_tools.rs b/src/dc_tools.rs
index 57da76fef..8f829aee1 100644
--- a/src/dc_tools.rs
+++ b/src/dc_tools.rs
@@ -803,7 +803,6 @@ pub unsafe fn dc_create_outgoing_rfc724_mid(
     ret
 }
 
-
 /// Extract our group ID from Message-IDs as `Gr.12345678901.morerandom@domain.de`
 /// `12345678901` is the wanted ID in this example.
 pub fn dc_extract_grpid_from_rfc724_mid(mid: &str) -> Option<&str> {