1 files changed, 1 insertions, 1 deletions
diff --git a/openssl-sys/src/lib.rs b/openssl-sys/src/lib.rs
index a482c357..649e269e 100755
--- a/openssl-sys/src/lib.rs
+++ b/openssl-sys/src/lib.rs
@@ -295,7 +295,7 @@ extern "C" {
                                                            n: c_int,
                                                            file: *const c_char,
                                                            line: c_int));
-    pub fn CRYPTO_free(buf: *const c_char);
+    pub fn CRYPTO_free(buf: *mut c_void);
     pub fn CRYPTO_memcmp(a: *const c_void, b: *const c_void,
                          len: size_t) -> c_int;