diff --git a/deltachat-ffi/deltachat.h b/deltachat-ffi/deltachat.h
index b632f54e9..c7d949679 100644
--- a/deltachat-ffi/deltachat.h
+++ b/deltachat-ffi/deltachat.h
@@ -431,7 +431,7 @@ int             dc_set_config_from_qr   (dc_context_t* context, const char* qr);
  * @param context The context object.
  * @return String which must be released using dc_str_unref() after usage.  Never returns NULL.
  */
-char*           dc_get_info                  (dc_context_t* context);
+char*           dc_get_info                  (const dc_context_t* context);
 
 
 /**
diff --git a/deltachat-ffi/src/lib.rs b/deltachat-ffi/src/lib.rs
index cdc2c99a0..627e79fff 100644
--- a/deltachat-ffi/src/lib.rs
+++ b/deltachat-ffi/src/lib.rs
@@ -218,7 +218,7 @@ pub unsafe extern "C" fn dc_set_config_from_qr(
 }
 
 #[no_mangle]
-pub unsafe extern "C" fn dc_get_info(context: *mut dc_context_t) -> *mut libc::c_char {
+pub unsafe extern "C" fn dc_get_info(context: *const dc_context_t) -> *mut libc::c_char {
     if context.is_null() {
         eprintln!("ignoring careless call to dc_get_info()");
         return "".strdup();