diff --git a/src/dc_receive_imf.rs b/src/dc_receive_imf.rs
index 817e7cfcc..568a90b19 100644
--- a/src/dc_receive_imf.rs
+++ b/src/dc_receive_imf.rs
@@ -948,7 +948,9 @@ unsafe fn create_or_lookup_group(
         if !field.is_null() && (*field).fld_type == MAILIMF_FIELD_MESSAGE_ID as libc::c_int {
             let fld_message_id: *mut mailimf_message_id = (*field).fld_data.fld_message_id;
             if !fld_message_id.is_null() {
-                if let Some(_grpid) = dc_extract_grpid_from_rfc724_mid(to_string((*fld_message_id).mid_value)) {
+                if let Some(_grpid) =
+                    dc_extract_grpid_from_rfc724_mid(to_string((*fld_message_id).mid_value))
+                {
                     grpid = to_cstring(_grpid);
                 } else {
                     grpid = 0 as *mut libc::c_char;
diff --git a/src/dc_tools.rs b/src/dc_tools.rs
index bee2decbf..23391ec86 100644
--- a/src/dc_tools.rs
+++ b/src/dc_tools.rs
@@ -830,7 +830,7 @@ pub unsafe fn dc_extract_grpid_from_rfc724_mid_list(list: *const clist) -> *mut
             } else {
                 "".to_string()
             };
-            
+
             if let Some(grpid) = dc_extract_grpid_from_rfc724_mid(mid) {
                 return to_cstring(grpid);
             }