diff --git a/src/libsysprof-capture/sysprof-capture-types.h b/src/libsysprof-capture/sysprof-capture-types.h
index c0d2e6e2..f249be5e 100644
--- a/src/libsysprof-capture/sysprof-capture-types.h
+++ b/src/libsysprof-capture/sysprof-capture-types.h
@@ -370,4 +370,17 @@ sysprof_capture_address_compare (SysprofCaptureAddress a,
     return 0;
 }
 
+/**
+ * SysprofBacktraceFunc:
+ * @addrs: (inout) (array length=n_addrs): an array to place addresses
+ *   into the capture frame
+ * @n_addrs: the length of @addrs
+ * @user_data: (scope call): closure data for the callback
+ *
+ * Returns: the number of addresses filled in @addrs
+ */
+typedef int (*SysprofBacktraceFunc) (SysprofCaptureAddress *addrs,
+                                     unsigned int           n_addrs,
+                                     void                  *user_data);
+
 SYSPROF_END_DECLS
diff --git a/src/libsysprof-capture/sysprof-capture-writer.h b/src/libsysprof-capture/sysprof-capture-writer.h
index c6c31507..b69cd740 100644
--- a/src/libsysprof-capture/sysprof-capture-writer.h
+++ b/src/libsysprof-capture/sysprof-capture-writer.h
@@ -67,19 +67,6 @@ SYSPROF_BEGIN_DECLS
 
 typedef struct _SysprofCaptureWriter SysprofCaptureWriter;
 
-/**
- * SysprofBacktraceFunc:
- * @addrs: (inout) (array length=n_addrs): an array to place addresses
- *   into the capture frame
- * @n_addrs: the length of @addrs
- * @user_data: (scope call): closure data for the callback
- *
- * Returns: the number of addresses filled in @addrs
- */
-typedef int (*SysprofBacktraceFunc) (SysprofCaptureAddress *addrs,
-                                     unsigned int           n_addrs,
-                                     void                  *user_data);
-
 SYSPROF_AVAILABLE_IN_ALL
 SysprofCaptureWriter *sysprof_capture_writer_new_from_env                    (size_t                             buffer_size);
 SYSPROF_AVAILABLE_IN_ALL