diff --git a/deltachat-ffi/deltachat.h b/deltachat-ffi/deltachat.h
index 791d1600f..cd29a6665 100644
--- a/deltachat-ffi/deltachat.h
+++ b/deltachat-ffi/deltachat.h
@@ -196,9 +196,9 @@ typedef struct _dc_event    dc_event_t;
 dc_event_t*   dc_get_next_event(dc_context_t* context);
 
 int           dc_event_get_id   (dc_event_t* event);
-int           dc_event_get_data1(dc_event_t* event);
-int           dc_event_get_data2(dc_event_t* event);
-char*         dc_event_get_data_string(dc_event_t* event);
+int           dc_event_get_data1_int(dc_event_t* event);
+int           dc_event_get_data2_int(dc_event_t* event);
+char*         dc_event_get_data3_str(dc_event_t* event);
 
 /**
  * TODO: document
diff --git a/deltachat-ffi/src/lib.rs b/deltachat-ffi/src/lib.rs
index 094b40883..122076310 100644
--- a/deltachat-ffi/src/lib.rs
+++ b/deltachat-ffi/src/lib.rs
@@ -525,9 +525,9 @@ pub unsafe extern "C" fn dc_event_get_id(event: *mut dc_event_t) -> libc::c_int
 }
 
 #[no_mangle]
-pub unsafe extern "C" fn dc_event_get_data1(event: *mut dc_event_t) -> libc::c_int {
+pub unsafe extern "C" fn dc_event_get_data1_int(event: *mut dc_event_t) -> libc::c_int {
     if event.is_null() {
-        eprintln!("ignoring careless call to dc_event_get_data1()");
+        eprintln!("ignoring careless call to dc_event_get_data1_int()");
         return 0;
     }
 
@@ -566,9 +566,9 @@ pub unsafe extern "C" fn dc_event_get_data1(event: *mut dc_event_t) -> libc::c_i
 }
 
 #[no_mangle]
-pub unsafe extern "C" fn dc_event_get_data2(event: *mut dc_event_t) -> libc::c_int {
+pub unsafe extern "C" fn dc_event_get_data2_int(event: *mut dc_event_t) -> libc::c_int {
     if event.is_null() {
-        eprintln!("ignoring careless call to dc_event_get_data2()");
+        eprintln!("ignoring careless call to dc_event_get_data2_int()");
         return 0;
     }
 
@@ -605,9 +605,9 @@ pub unsafe extern "C" fn dc_event_get_data2(event: *mut dc_event_t) -> libc::c_i
 }
 
 #[no_mangle]
-pub unsafe extern "C" fn dc_event_get_data_string(event: *mut dc_event_t) -> *mut libc::c_char {
+pub unsafe extern "C" fn dc_event_get_data3_str(event: *mut dc_event_t) -> *mut libc::c_char {
     if event.is_null() {
-        eprintln!("ignoring careless call to dc_event_get_data_string()");
+        eprintln!("ignoring careless call to dc_event_get_data3_str()");
         return ptr::null_mut();
     }