diff --git a/src/assets.rs b/src/assets.rs
index 734c6d20..5e0c0644 100644
--- a/src/assets.rs
+++ b/src/assets.rs
@@ -11,6 +11,7 @@ use syntect::parsing::{SyntaxReference, SyntaxSet, SyntaxSetBuilder};
 use path_abs::PathAbs;
 
 use crate::assets_metadata::AssetsMetadata;
+use crate::bat_warning;
 use crate::error::*;
 use crate::input::{InputReader, OpenedInput, OpenedInputKind};
 use crate::syntax_mapping::{MappingTarget, SyntaxMapping};
@@ -190,21 +191,11 @@ impl HighlightingAssets {
             Some(theme) => theme,
             None => {
                 if theme == "ansi-light" || theme == "ansi-dark" {
-                    use ansi_term::Colour::Yellow;
-                    eprintln!(
-                        "{}: Theme '{}' is deprecated, using 'ansi' instead.",
-                        Yellow.paint("[bat warning]"),
-                        theme
-                    );
+                    bat_warning!("Theme '{}' is deprecated, using 'ansi' instead.", theme);
                     return self.get_theme("ansi");
                 }
                 if theme != "" {
-                    use ansi_term::Colour::Yellow;
-                    eprintln!(
-                        "{}: Unknown theme '{}', using default.",
-                        Yellow.paint("[bat warning]"),
-                        theme
-                    );
+                    bat_warning!("Unknown theme '{}', using default.", theme)
                 }
                 &self.theme_set.themes[self.fallback_theme.unwrap_or_else(|| Self::default_theme())]
             }
diff --git a/src/bin/bat/app.rs b/src/bin/bat/app.rs
index c7b9d81d..3d0df0ec 100644
--- a/src/bin/bat/app.rs
+++ b/src/bin/bat/app.rs
@@ -16,6 +16,7 @@ use console::Term;
 use crate::input::{new_file_input, new_stdin_input};
 use bat::{
     assets::HighlightingAssets,
+    bat_warning,
     config::{Config, VisibleLines},
     error::*,
     input::Input,
@@ -322,11 +323,7 @@ impl App {
 
         // If `grid` is set, remove `rule` as it is a subset of `grid`, and print a warning.
         if styled_components.grid() && styled_components.0.remove(&StyleComponent::Rule) {
-            use ansi_term::Colour::Yellow;
-            eprintln!(
-                "{}: Style 'rule' is a subset of style 'grid', 'rule' will not be visible.",
-                Yellow.paint("[bat warning]"),
-            );
+            bat_warning!("Style 'rule' is a subset of style 'grid', 'rule' will not be visible.");
         }
 
         Ok(styled_components)
diff --git a/src/lib.rs b/src/lib.rs
index 6d6dd206..d0d1fe0c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -19,6 +19,8 @@
 //!     .unwrap();
 //! ```
 
+mod macros;
+
 pub mod assets;
 pub mod assets_metadata;
 pub mod config;
diff --git a/src/macros.rs b/src/macros.rs
new file mode 100644
index 00000000..beb63ea7
--- /dev/null
+++ b/src/macros.rs
@@ -0,0 +1,7 @@
+#[macro_export]
+macro_rules! bat_warning {
+    ($($arg:tt)*) => ({
+        use ansi_term::Colour::Yellow;
+        eprintln!("{}: {}", Yellow.paint("[bat warning]"), format!($($arg)*));
+    })
+}