diff --git a/src/extension_set.rs b/src/extension_set.rs
deleted file mode 100644
index ddfb5c4..0000000
--- a/src/extension_set.rs
+++ /dev/null
@@ -1,52 +0,0 @@
-//! Sets of extensions for use with [Parameter](crate::parameters::Parameters)'s `-E` flag.
-use clap::Clap;
-
-#[derive(Clap, PartialEq, Debug)]
-pub enum ExtensionSet {
-	/// Extensions used for image file formats, such as `png`, `jpeg`, `webp`, etc.
-	Images,
-	/// Extensions used for audio file formats, such as `mp3`, `ogg`, `flac`, etc.
-	Audio,
-	/// Extensions used for video file formats, such as `mkv`, `mp4`, `mov`, etc.
-	Videos,
-	/// Extensions used for media file formats. This acts as a combination of the [Images](ExtensionSet::Images),
-	/// [Audio](ExtensionSet::Audio) and [Videos](ExtensionSet::Videos) variants.
-	Media,
-	/// Extensions used for document file formats, such as `pdf`, `odt`, `docx`, etc.
-	Documents,
-	/// Extensions used for text file formats, such as `txt`, `toml`, `html`, etc.
-	Text,
-	/// Extensions used for archive file formats, such as `zip`, `zst`, `gz`, etc.
-	Archives,
-	/// Extensions used for system file formats, such as `mbr`, `crash`, `dll`, etc.
-	System,
-}
-
-impl ExtensionSet {
-	/// The list of known extensions for this `ExtensionSet`.
-	pub fn extensions(&self) -> Vec<&str> {
-		match self {
-			Self::Images => mime_guess::get_mime_extensions_str("image/*").unwrap().to_vec(),
-			Self::Audio => mime_guess::get_mime_extensions_str("audio/*").unwrap().to_vec(),
-			Self::Videos => mime_guess::get_mime_extensions_str("video/*").unwrap().to_vec(),
-			Self::Media => [
-				Self::Images.extensions(),
-				Self::Audio.extensions(),
-				Self::Videos.extensions(),
-			]
-			.concat(),
-			Self::Documents => vec![
-				"pdf", "doc", "docx", "ppt", "pptx", "xls", "xlsx", "csv", "tsv", "odt", "ods", "odp", "oda", "rtf", "ps",
-				"pages", "key", "numbers",
-			],
-			Self::Text => mime_guess::get_mime_extensions_str("text/*").unwrap().to_vec(),
-			// many compressed file types follow the name scheme "application/x.+compressed.*" - maybe this can be used
-			// somehow to extract extensions for compressed files from mime_guess?
-			Self::Archives => vec!["zip", "tar", "gz", "zst", "xz", "rar", "7z", "bz", "bz2", "tgz", "rpa"],
-			Self::System => vec![
-				"com", "dll", "exe", "sys", "reg", "nt", "cpl", "msi", "efi", "bio", "rcv", "mbr", "sbf", "grub", "ko",
-				"dylib", "pdb", "hdmp", "crash",
-			],
-		}
-	}
-}
diff --git a/src/main.rs b/src/main.rs
index d7eb6f7..d23642d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -37,7 +37,6 @@ use crate::mime_db::MimeDb;
 use crate::parameters::{OutputFormat, ScanOpts};
 use crate::scan_error::ScanError;
 
-mod extension_set;
 mod findings;
 mod formats;
 mod inspectors;
diff --git a/src/parameters.rs b/src/parameters.rs
index cf8b306..f4e1e83 100644
--- a/src/parameters.rs
+++ b/src/parameters.rs
@@ -1,6 +1,5 @@
 //! [Clap] struct used to parse command line arguments.
 
-use crate::extension_set::ExtensionSet;
 use crate::string_type::String as StringType;
 use cfg_if::cfg_if;
 use clap::{AppSettings, Clap};
@@ -125,3 +124,55 @@ impl Parameters {
 		}
 	}
 }
+
+/// Sets of extensions for use with [Parameter](crate::parameters::Parameters)'s `-E` flag.
+#[derive(Clap, PartialEq, Debug)]
+pub enum ExtensionSet {
+	/// Extensions used for image file formats, such as `png`, `jpeg`, `webp`, etc.
+	Images,
+	/// Extensions used for audio file formats, such as `mp3`, `ogg`, `flac`, etc.
+	Audio,
+	/// Extensions used for video file formats, such as `mkv`, `mp4`, `mov`, etc.
+	Videos,
+	/// Extensions used for media file formats. This acts as a combination of the [Images](ExtensionSet::Images),
+	/// [Audio](ExtensionSet::Audio) and [Videos](ExtensionSet::Videos) variants.
+	Media,
+	/// Extensions used for document file formats, such as `pdf`, `odt`, `docx`, etc.
+	Documents,
+	/// Extensions used for text file formats, such as `txt`, `toml`, `html`, etc.
+	Text,
+	/// Extensions used for archive file formats, such as `zip`, `zst`, `gz`, etc.
+	Archives,
+	/// Extensions used for system file formats, such as `mbr`, `crash`, `dll`, etc.
+	System,
+}
+
+impl ExtensionSet {
+	/// The list of known extensions for this `ExtensionSet`.
+	pub fn extensions(&self) -> Vec<&str> {
+		match self {
+			Self::Images => mime_guess::get_mime_extensions_str("image/*").unwrap().to_vec(),
+			Self::Audio => mime_guess::get_mime_extensions_str("audio/*").unwrap().to_vec(),
+			Self::Videos => mime_guess::get_mime_extensions_str("video/*").unwrap().to_vec(),
+			Self::Media => [
+				Self::Images.extensions(),
+				Self::Audio.extensions(),
+				Self::Videos.extensions(),
+			]
+				.concat(),
+			Self::Documents => vec![
+				"pdf", "doc", "docx", "ppt", "pptx", "xls", "xlsx", "csv", "tsv", "odt", "ods", "odp", "oda", "rtf", "ps",
+				"pages", "key", "numbers",
+			],
+			Self::Text => mime_guess::get_mime_extensions_str("text/*").unwrap().to_vec(),
+			// many compressed file types follow the name scheme "application/x.+compressed.*" - maybe this can be used
+			// somehow to extract extensions for compressed files from mime_guess?
+			Self::Archives => vec!["zip", "tar", "gz", "zst", "xz", "rar", "7z", "bz", "bz2", "tgz", "rpa"],
+			Self::System => vec![
+				"com", "dll", "exe", "sys", "reg", "nt", "cpl", "msi", "efi", "bio", "rcv", "mbr", "sbf", "grub", "ko",
+				"dylib", "pdb", "hdmp", "crash",
+			],
+		}
+	}
+}
+
diff --git a/src/tests/mod.rs b/src/tests/mod.rs
index 48b697c..5221e45 100644
--- a/src/tests/mod.rs
+++ b/src/tests/mod.rs
@@ -278,7 +278,7 @@ fn outputs_move_commands() {
 #[test]
 /// Ensure that the Media extension set contains all (is a superset) of Audio, Video, and Images.
 fn media_contains_audio_video_images() {
-	use crate::extension_set::ExtensionSet::{Audio, Images, Media, Videos};
+	use crate::parameters::ExtensionSet::{Audio, Images, Media, Videos};
 	let media_exts = Media.extensions();
 
 	// assert every extension in the audio/video/image sets is contained in the media set