diff --git a/src/cli.rs b/src/cli.rs
index 14506f4fd7..76da787592 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -1,5 +1,6 @@
 use std::path::PathBuf;
 
+use anyhow::Result;
 use clap::{command, Parser};
 use regex::Regex;
 use rustc_hash::FxHashMap;
@@ -146,7 +147,7 @@ pub fn extract_log_level(cli: &Cli) -> LogLevel {
 pub fn collect_per_file_ignores(
     pairs: Vec<PatternPrefixPair>,
     project_root: Option<&PathBuf>,
-) -> Vec<PerFileIgnore> {
+) -> Result<Vec<PerFileIgnore>> {
     let mut per_file_ignores: FxHashMap<String, Vec<CheckCodePrefix>> = FxHashMap::default();
     for pair in pairs {
         per_file_ignores
diff --git a/src/fs.rs b/src/fs.rs
index 6e02ed3ff2..e487c86056 100644
--- a/src/fs.rs
+++ b/src/fs.rs
@@ -203,7 +203,7 @@ mod tests {
         let exclude = vec![FilePattern::from_user(
             "foo",
             Some(&project_root.to_path_buf()),
-        )];
+        )?];
         let (file_path, file_basename) = extract_path_names(&path)?;
         assert!(is_excluded(file_path, file_basename, exclude.iter()));
 
@@ -211,7 +211,7 @@ mod tests {
         let exclude = vec![FilePattern::from_user(
             "bar",
             Some(&project_root.to_path_buf()),
-        )];
+        )?];
         let (file_path, file_basename) = extract_path_names(&path)?;
         assert!(is_excluded(file_path, file_basename, exclude.iter()));
 
@@ -221,7 +221,7 @@ mod tests {
         let exclude = vec![FilePattern::from_user(
             "baz.py",
             Some(&project_root.to_path_buf()),
-        )];
+        )?];
         let (file_path, file_basename) = extract_path_names(&path)?;
         assert!(is_excluded(file_path, file_basename, exclude.iter()));
 
@@ -229,7 +229,7 @@ mod tests {
         let exclude = vec![FilePattern::from_user(
             "foo/bar",
             Some(&project_root.to_path_buf()),
-        )];
+        )?];
         let (file_path, file_basename) = extract_path_names(&path)?;
         assert!(is_excluded(file_path, file_basename, exclude.iter()));
 
@@ -239,7 +239,7 @@ mod tests {
         let exclude = vec![FilePattern::from_user(
             "foo/bar/baz.py",
             Some(&project_root.to_path_buf()),
-        )];
+        )?];
         let (file_path, file_basename) = extract_path_names(&path)?;
         assert!(is_excluded(file_path, file_basename, exclude.iter()));
 
@@ -249,7 +249,7 @@ mod tests {
         let exclude = vec![FilePattern::from_user(
             "foo/bar/*.py",
             Some(&project_root.to_path_buf()),
-        )];
+        )?];
         let (file_path, file_basename) = extract_path_names(&path)?;
         assert!(is_excluded(file_path, file_basename, exclude.iter()));
 
@@ -259,7 +259,7 @@ mod tests {
         let exclude = vec![FilePattern::from_user(
             "baz",
             Some(&project_root.to_path_buf()),
-        )];
+        )?];
         let (file_path, file_basename) = extract_path_names(&path)?;
         assert!(!is_excluded(file_path, file_basename, exclude.iter()));
 
diff --git a/src/main.rs b/src/main.rs
index 59069081c9..61c3b6eb68 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -219,12 +219,12 @@ fn inner_main() -> Result<ExitCode> {
         .exclude
         .iter()
         .map(|path| FilePattern::from_user(path, project_root.as_ref()))
-        .collect();
+        .collect::<Result<_>>()?;
     let extend_exclude: Vec<FilePattern> = cli
         .extend_exclude
         .iter()
         .map(|path| FilePattern::from_user(path, project_root.as_ref()))
-        .collect();
+        .collect::<Result<_>>()?;
 
     let mut configuration =
         Configuration::from_pyproject(pyproject.as_ref(), project_root.as_ref())?;
@@ -236,7 +236,7 @@ fn inner_main() -> Result<ExitCode> {
     }
     if !cli.per_file_ignores.is_empty() {
         configuration.per_file_ignores =
-            collect_per_file_ignores(cli.per_file_ignores, project_root.as_ref());
+            collect_per_file_ignores(cli.per_file_ignores, project_root.as_ref())?;
     }
     if !cli.select.is_empty() {
         configuration.select = cli.select;
diff --git a/src/settings/configuration.rs b/src/settings/configuration.rs
index f4e9db7606..78522d7df3 100644
--- a/src/settings/configuration.rs
+++ b/src/settings/configuration.rs
@@ -111,13 +111,14 @@ impl Configuration {
                         .map(|path| FilePattern::from_user(path, project_root))
                         .collect()
                 })
+                .transpose()?
                 .unwrap_or_else(|| DEFAULT_EXCLUDE.clone()),
             extend_exclude: options
                 .extend_exclude
                 .unwrap_or_default()
                 .iter()
                 .map(|path| FilePattern::from_user(path, project_root))
-                .collect(),
+                .collect::<Result<_>>()?,
             extend_ignore: options.extend_ignore.unwrap_or_default(),
             select: options
                 .select
@@ -159,6 +160,7 @@ impl Configuration {
                         })
                         .collect()
                 })
+                .transpose()?
                 .unwrap_or_default(),
             show_source: options.show_source.unwrap_or_default(),
             // Plugins
diff --git a/src/settings/types.rs b/src/settings/types.rs
index 2b79269f06..cde000a9c2 100644
--- a/src/settings/types.rs
+++ b/src/settings/types.rs
@@ -51,21 +51,21 @@ pub enum FilePattern {
 }
 
 impl FilePattern {
-    pub fn from_user(pattern: &str, project_root: Option<&PathBuf>) -> Self {
+    pub fn from_user(pattern: &str, project_root: Option<&PathBuf>) -> Result<Self> {
         let path = Path::new(pattern);
         let absolute_path = match project_root {
             Some(project_root) => fs::normalize_path_to(path, project_root),
             None => fs::normalize_path(path),
         };
 
-        let absolute = Pattern::new(&absolute_path.to_string_lossy()).expect("Invalid pattern.");
+        let absolute = Pattern::new(&absolute_path.to_string_lossy())?;
         let basename = if !pattern.contains(std::path::MAIN_SEPARATOR) {
-            Some(Pattern::new(pattern).expect("Invalid pattern."))
+            Some(Pattern::new(pattern)?)
         } else {
             None
         };
 
-        FilePattern::Complex(absolute, basename)
+        Ok(FilePattern::Complex(absolute, basename))
     }
 }
 
@@ -80,10 +80,10 @@ impl PerFileIgnore {
         pattern: &str,
         prefixes: &[CheckCodePrefix],
         project_root: Option<&PathBuf>,
-    ) -> Self {
-        let pattern = FilePattern::from_user(pattern, project_root);
+    ) -> Result<Self> {
+        let pattern = FilePattern::from_user(pattern, project_root)?;
         let codes = BTreeSet::from_iter(prefixes.iter().flat_map(|prefix| prefix.codes()));
-        Self { pattern, codes }
+        Ok(Self { pattern, codes })
     }
 }