diff --git a/src/statement.rs b/src/statement.rs
index 10a8b5e..d467a02 100644
--- a/src/statement.rs
+++ b/src/statement.rs
@@ -1,5 +1,6 @@
 use ffi;
-use libc::{c_double, c_int};
+use libc::{c_double, c_int, c_void};
+use std::ffi::CString;
 use std::marker::PhantomData;
 
 use {Cursor, Result, Type, Value};
@@ -161,7 +162,8 @@ impl<'l> Bindable for &'l str {
         debug_assert!(i > 0, "the indexing starts from 1");
         unsafe {
             ok!(statement.raw.1, ffi::sqlite3_bind_text(statement.raw.0, i as c_int,
-                                                        str_to_cstr!(*self).as_ptr(), -1, None));
+                                                        str_to_cstr!(*self).into_raw(), -1,
+                                                        Some(drop_cstring)));
         }
         Ok(())
     }
@@ -250,3 +252,7 @@ pub fn new<'l, T: AsRef<str>>(raw1: *mut ffi::sqlite3, statement: T) -> Result<S
     }
     Ok(Statement { raw: (raw0, raw1), phantom: PhantomData })
 }
+
+extern "C" fn drop_cstring(pointer: *mut c_void) {
+    let _ = unsafe { CString::from_raw(pointer as *mut _) };
+}