diff --git a/src/sdl2/ttf/context.rs b/src/sdl2/ttf/context.rs
index ad3d5721..52ca8b3b 100644
--- a/src/sdl2/ttf/context.rs
+++ b/src/sdl2/ttf/context.rs
@@ -96,7 +96,7 @@ impl error::Error for InitError {
         }
     }
 
-    fn cause(&self) -> Option<&error::Error> {
+    fn cause(&self) -> Option<&dyn error::Error> {
         match *self {
             InitError::AlreadyInitializedError => {
                 None
diff --git a/src/sdl2/ttf/font.rs b/src/sdl2/ttf/font.rs
index 1fac3343..14aa5681 100644
--- a/src/sdl2/ttf/font.rs
+++ b/src/sdl2/ttf/font.rs
@@ -69,7 +69,7 @@ impl error::Error for FontError {
         }
     }
 
-    fn cause(&self) -> Option<&error::Error> {
+    fn cause(&self) -> Option<&dyn error::Error> {
         match *self {
             FontError::InvalidLatin1Text(ref error) => {
                 Some(error)