diff --git a/src/attr.rs b/src/attr.rs
index 4bfba22..20bf628 100644
--- a/src/attr.rs
+++ b/src/attr.rs
@@ -28,7 +28,7 @@
 #[cfg(feature = "parsing")]
 pub mod parsing {
     use super::*;
-    use helper::escaped_string;
+    use escape::escaped_string;
     use ident::parsing::ident;
     use nom::multispace;
 
diff --git a/src/escape.rs b/src/escape.rs
new file mode 100644
index 0000000..de76590
--- /dev/null
+++ b/src/escape.rs
@@ -0,0 +1,42 @@
+#![cfg(feature = "parsing")]
+
+use nom::{self, IResult};
+
+pub fn escaped_string(input: &str) -> IResult<&str, String> {
+    let mut s = String::new();
+    let mut chars = input.char_indices().peekable();
+    while let Some((byte_offset, ch)) = chars.next() {
+        match ch {
+            '"' => {
+                return IResult::Done(&input[byte_offset..], s);
+            }
+            '\\' => {
+                match chars.next() {
+                    Some((_, 'x')) => unimplemented!(),
+                    Some((_, 'n')) => s.push('\n'),
+                    Some((_, 'r')) => s.push('\r'),
+                    Some((_, 't')) => s.push('\t'),
+                    Some((_, '\\')) => s.push('\\'),
+                    Some((_, '0')) => s.push('\0'),
+                    Some((_, 'u')) => unimplemented!(),
+                    Some((_, '\'')) => s.push('\''),
+                    Some((_, '"')) => s.push('"'),
+                    Some((_, '\n')) => {
+                        while let Some(&(_, ch)) = chars.peek() {
+                            if ch.is_whitespace() {
+                                chars.next();
+                            } else {
+                                break;
+                            }
+                        }
+                    }
+                    _ => break,
+                }
+            }
+            ch => {
+                s.push(ch);
+            }
+        }
+    }
+    IResult::Error(nom::Err::Position(nom::ErrorKind::Escaped, input))
+}
diff --git a/src/helper.rs b/src/helper.rs
index eec2912..952a356 100644
--- a/src/helper.rs
+++ b/src/helper.rs
@@ -56,42 +56,3 @@
         })
     };
 }
-
-pub fn escaped_string(input: &str) -> IResult<&str, String> {
-    let mut s = String::new();
-    let mut chars = input.char_indices().peekable();
-    while let Some((byte_offset, ch)) = chars.next() {
-        match ch {
-            '"' => {
-                return IResult::Done(&input[byte_offset..], s);
-            }
-            '\\' => {
-                match chars.next() {
-                    Some((_, 'x')) => unimplemented!(),
-                    Some((_, 'n')) => s.push('\n'),
-                    Some((_, 'r')) => s.push('\r'),
-                    Some((_, 't')) => s.push('\t'),
-                    Some((_, '\\')) => s.push('\\'),
-                    Some((_, '0')) => s.push('\0'),
-                    Some((_, 'u')) => unimplemented!(),
-                    Some((_, '\'')) => s.push('\''),
-                    Some((_, '"')) => s.push('"'),
-                    Some((_, '\n')) => {
-                        while let Some(&(_, ch)) = chars.peek() {
-                            if ch.is_whitespace() {
-                                chars.next();
-                            } else {
-                                break;
-                            }
-                        }
-                    }
-                    _ => break,
-                }
-            }
-            ch => {
-                s.push(ch);
-            }
-        }
-    }
-    IResult::Error(nom::Err::Position(nom::ErrorKind::Escaped, input))
-}
diff --git a/src/lib.rs b/src/lib.rs
index 2bee314..6037fdf 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -11,6 +11,8 @@
 #[macro_use]
 mod helper;
 
+mod escape;
+
 mod attr;
 pub use attr::{
     Attribute,