diff --git a/cocoa-foundation/src/foundation.rs b/cocoa-foundation/src/foundation.rs
index 80d97ca..b9ca8b0 100644
--- a/cocoa-foundation/src/foundation.rs
+++ b/cocoa-foundation/src/foundation.rs
@@ -229,12 +229,8 @@ pub trait NSProcessInfo: Sized {
         msg_send![class!(NSProcessInfo), processInfo]
     }
 
-    unsafe fn systemUptime(_: Self) -> NSTimeInterval {
-        msg_send![class!(NSProcessInfo), systemUptime]
-    }
-
+    unsafe fn systemUptime(self) -> NSTimeInterval;
     unsafe fn processName(self) -> id;
-    unsafe fn uptime(self) -> NSTimeInterval;
     unsafe fn operatingSystemVersion(self) -> NSOperatingSystemVersion;
     unsafe fn isOperatingSystemAtLeastVersion(self, version: NSOperatingSystemVersion) -> bool;
 }
@@ -244,7 +240,7 @@ impl NSProcessInfo for id {
         msg_send![self, processName]
     }
 
-    unsafe fn uptime(self) -> NSTimeInterval {
+    unsafe fn systemUptime(self) -> NSTimeInterval {
         msg_send![self, systemUptime]
     }
 
diff --git a/core-foundation/Cargo.toml b/core-foundation/Cargo.toml
index fba824b..ce2e09e 100644
--- a/core-foundation/Cargo.toml
+++ b/core-foundation/Cargo.toml
@@ -11,7 +11,7 @@ keywords = ["macos", "framework", "objc"]
 
 [dependencies.core-foundation-sys]
 path = "../core-foundation-sys"
-version = "0.8.0"
+version = "0.8.3"
 
 [dependencies]
 libc = "0.2"
diff --git a/core-text/src/font.rs b/core-text/src/font.rs
index ebe6d58..d710705 100644
--- a/core-text/src/font.rs
+++ b/core-text/src/font.rs
@@ -691,6 +691,8 @@ fn macos_version() -> (i32, i32, i32) {
 
 #[test]
 fn copy_system_font() {
+    use crate::*;
+
     let small = unsafe {
         CTFont::wrap_under_create_rule(
             CTFontCreateUIFontForLanguage(kCTFontSystemDetailFontType, 19., std::ptr::null())
@@ -712,6 +714,12 @@ fn copy_system_font() {
     let ctfont = new_from_descriptor(&desc, 20.);
     assert_eq!(big.postscript_name(), ctfont.postscript_name());
 
+    // check that we can construct a new version by attributes
+    let attr = desc.attributes();
+    let desc_from_attr = font_descriptor::new_from_attributes(&attr);
+    let font_from_attr = new_from_descriptor(&desc_from_attr, 19.);
+    assert_eq!(font_from_attr.postscript_name(), small.postscript_name());
+
     // on newer versions of macos we can't construct by name anymore
     if macos_version() < (10, 13, 0) {
         let ui_font_by_name = new_from_name(&small.postscript_name(), 19.).unwrap();