diff --git a/imgui.h b/imgui.h
index 35886986..bf687178 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1020,8 +1020,8 @@ struct ImGuiTextEditCallbackData
     int                 SelectionEnd;   //                                      // Read-write
 
     // NB: Helper functions for text manipulation. Calling those function loses selection.
-    void    DeleteChars(int pos, int bytes_count);
-    void    InsertChars(int pos, const char* text, const char* text_end = NULL);
+    IMGUI_API void    DeleteChars(int pos, int bytes_count);
+    IMGUI_API void    InsertChars(int pos, const char* text, const char* text_end = NULL);
     bool    HasSelection() const { return SelectionStart != SelectionEnd; }
 };