diff --git a/src/context.rs b/src/context.rs
index 1a296627c..46613ffe9 100644
--- a/src/context.rs
+++ b/src/context.rs
@@ -107,7 +107,7 @@ impl Default for BobStatus {
 pub struct SmtpState {
     pub idle: bool,
     pub suspended: bool,
-    pub doing_jobs: i32,
+    pub doing_jobs: bool,
     pub perform_jobs_needed: i32,
     pub probe_network: bool,
 }
diff --git a/src/dc_job.rs b/src/dc_job.rs
index f1f9bfa8b..07080d2a4 100644
--- a/src/dc_job.rs
+++ b/src/dc_job.rs
@@ -283,7 +283,7 @@ unsafe fn dc_suspend_smtp_thread(context: &Context, suspend: bool) {
     context.smtp_state.0.lock().unwrap().suspended = suspend;
     if suspend {
         loop {
-            if context.smtp_state.0.lock().unwrap().doing_jobs == 0 {
+            if !context.smtp_state.0.lock().unwrap().doing_jobs {
                 return;
             }
             std::thread::sleep(std::time::Duration::from_micros(300 * 1000));
@@ -1049,7 +1049,7 @@ pub unsafe fn dc_perform_smtp_jobs(context: &Context) {
             info!(context, 0, "SMTP-jobs suspended.",);
             return;
         }
-        state.doing_jobs = 1;
+        state.doing_jobs = true;
         probe_smtp_network
     };
 
@@ -1061,7 +1061,7 @@ pub unsafe fn dc_perform_smtp_jobs(context: &Context) {
         let &(ref lock, _) = &*context.smtp_state.clone();
         let mut state = lock.lock().unwrap();
 
-        state.doing_jobs = 0;
+        state.doing_jobs = false;
     }
 }