diff --git a/src/internal.h b/src/internal.h
index c37c89dc..8a08099a 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -708,7 +708,7 @@ struct _GLFWplatform
     void (*setWindowIcon)(_GLFWwindow*,int,const GLFWimage*);
     void (*setWindowTaskbarProgress)(_GLFWwindow*,const int,double);
     void (*setWindowTaskbarBadge)(_GLFWwindow*,int);
-    void (*setWindowTaskbarBadgeString)(_GLFWwindow*,int);
+    void (*setWindowTaskbarBadgeString)(_GLFWwindow*,const char* string);
     void (*getWindowPos)(_GLFWwindow*,int*,int*);
     void (*setWindowPos)(_GLFWwindow*,int,int);
     void (*getWindowSize)(_GLFWwindow*,int*,int*);