diff --git a/README.md b/README.md
index 210edf82..ca1bfa88 100644
--- a/README.md
+++ b/README.md
@@ -313,6 +313,7 @@ information on what to include when reporting a bug.
  - [Wayland] Bugfix: `glfwSetClipboardString` would fail if set to result of
    `glfwGetClipboardString`
  - [Wayland] Bugfix: Data source creation error would cause double free at termination
+ - [Wayland] Bugfix: Partial writes of clipboard string would cause beginning to repeat
  - [POSIX] Removed use of deprecated function `gettimeofday`
  - [POSIX] Bugfix: `CLOCK_MONOTONIC` was not correctly tested for or enabled
  - [WGL] Disabled the DWM swap interval hack for Windows 8 and later (#1072)
diff --git a/src/wl_window.c b/src/wl_window.c
index 01002061..6e7f282b 100644
--- a/src/wl_window.c
+++ b/src/wl_window.c
@@ -1591,7 +1591,7 @@ static void dataSourceHandleSend(void* data,
                                  const char* mimeType,
                                  int fd)
 {
-    const char* string = _glfw.wl.clipboardSendString;
+    char* string = _glfw.wl.clipboardSendString;
     size_t len = strlen(string);
     int ret;
 
@@ -1631,6 +1631,7 @@ static void dataSourceHandleSend(void* data,
             return;
         }
         len -= ret;
+        string += ret;
     }
     close(fd);
 }