diff --git a/src/font_collection.rs b/src/font_collection.rs
index c978f9e..ba492b9 100644
--- a/src/font_collection.rs
+++ b/src/font_collection.rs
@@ -89,7 +89,7 @@ impl CTFontCollection {
 pub fn new_from_descriptors(descs: &CFArray) -> CTFontCollection {
     unsafe {
         let key: CFString = TCFType::wrap_under_get_rule(kCTFontCollectionRemoveDuplicatesOption);
-        let value = CFNumber::from_i64(1);
+        let value = CFNumber::from(1i64);
         let options = CFDictionary::from_CFType_pairs(&[ (key.as_CFType(), value.as_CFType()) ]);
         let font_collection_ref =
             CTFontCollectionCreateWithFontDescriptors(descs.as_concrete_TypeRef(),
@@ -101,7 +101,7 @@ pub fn new_from_descriptors(descs: &CFArray) -> CTFontCollection {
 pub fn create_for_all_families() -> CTFontCollection {
     unsafe {
         let key: CFString = TCFType::wrap_under_get_rule(kCTFontCollectionRemoveDuplicatesOption);
-        let value = CFNumber::from_i64(1);
+        let value = CFNumber::from(1i64);
         let options = CFDictionary::from_CFType_pairs(&[ (key.as_CFType(), value.as_CFType()) ]);
         let font_collection_ref =
             CTFontCollectionCreateFromAvailableFonts(options.as_concrete_TypeRef());