diff --git a/src/configure/auto_mozilla.rs b/src/configure/auto_mozilla.rs
index 0da737fcd..81843f0d0 100644
--- a/src/configure/auto_mozilla.rs
+++ b/src/configure/auto_mozilla.rs
@@ -39,9 +39,7 @@ pub unsafe fn moz_autoconfigure(
         tag_config: 0,
     };
 
-    let url_c = url.strdup();
-    let xml_raw = read_autoconf_file(context, url_c);
-    free(url_c as *mut libc::c_void);
+    let xml_raw = read_autoconf_file(context, url);
     if xml_raw.is_null() {
         return None;
     }
diff --git a/src/configure/auto_outlook.rs b/src/configure/auto_outlook.rs
index 52f7e0d4b..b69c1cb50 100644
--- a/src/configure/auto_outlook.rs
+++ b/src/configure/auto_outlook.rs
@@ -50,7 +50,7 @@ pub unsafe fn outlk_autodiscover(
             0,
             ::std::mem::size_of::<outlk_autodiscover_t>(),
         );
-        xml_raw = read_autoconf_file(context, url);
+        xml_raw = read_autoconf_file(context, as_str(url));
         if xml_raw.is_null() {
             ok_to_continue = false;
             break;
diff --git a/src/configure/mod.rs b/src/configure/mod.rs
index 6746e7e2d..f4e5d5fbb 100644
--- a/src/configure/mod.rs
+++ b/src/configure/mod.rs
@@ -663,11 +663,11 @@ pub fn dc_stop_ongoing_process(context: &Context) {
     };
 }
 
-pub fn read_autoconf_file(context: &Context, url: *const libc::c_char) -> *mut libc::c_char {
-    info!(context, 0, "Testing {} ...", to_string(url));
+pub fn read_autoconf_file(context: &Context, url: &str) -> *mut libc::c_char {
+    info!(context, 0, "Testing {} ...", url);
 
     match reqwest::Client::new()
-        .get(as_str(url))
+        .get(url)
         .send()
         .and_then(|mut res| res.text())
     {