diff --git a/src/font/fallback/macos.rs b/src/font/fallback/macos.rs
index 62b2590..acfb0ac 100644
--- a/src/font/fallback/macos.rs
+++ b/src/font/fallback/macos.rs
@@ -5,6 +5,7 @@ use unicode_script::Script;
 use super::Fallback;
 
 /// A platform-specific font fallback list, for MacOS.
+#[derive(Debug)]
 pub struct PlatformFallback;
 
 impl Fallback for PlatformFallback {
diff --git a/src/font/fallback/other.rs b/src/font/fallback/other.rs
index 4ab2c16..7659d80 100644
--- a/src/font/fallback/other.rs
+++ b/src/font/fallback/other.rs
@@ -5,6 +5,7 @@ use unicode_script::Script;
 use super::Fallback;
 
 /// An empty platform-specific font fallback list.
+#[derive(Debug)]
 pub struct PlatformFallback;
 
 impl Fallback for PlatformFallback {
diff --git a/src/font/fallback/unix.rs b/src/font/fallback/unix.rs
index 010ff60..52e76ab 100644
--- a/src/font/fallback/unix.rs
+++ b/src/font/fallback/unix.rs
@@ -5,7 +5,7 @@ use unicode_script::Script;
 use super::Fallback;
 
 /// A platform-specific font fallback list, for Unix.
-pub struct PlatformFallback;
+#[derive(Debug)] pub struct PlatformFallback;
 
 impl Fallback for PlatformFallback {
     fn common_fallback(&self) -> &'static [&'static str] {
diff --git a/src/font/fallback/windows.rs b/src/font/fallback/windows.rs
index 1d5abd0..0737263 100644
--- a/src/font/fallback/windows.rs
+++ b/src/font/fallback/windows.rs
@@ -5,6 +5,7 @@ use unicode_script::Script;
 use super::Fallback;
 
 /// A platform-specific font fallback list, for Windows.
+#[derive(Debug)]
 pub struct PlatformFallback;
 
 impl Fallback for PlatformFallback {