diff --git a/src/backend/wayland/wl_backend.c b/src/backend/wayland/wl_backend.c
index 07fa8b1..d3f4038 100644
--- a/src/backend/wayland/wl_backend.c
+++ b/src/backend/wayland/wl_backend.c
@@ -5352,6 +5352,19 @@ static void wl_clipboard_store_to_seat(const char *text, int len)
     if (!wl_state.seat || !text || len <= 0)
         return;
 
+    /* If we already own the seat selection, just update the buffer
+     * instead of re-initializing the source (which can corrupt
+     * wlroots' internal state for subsequent paste requests). */
+    if (wl_state.seat->selection_source == &wl_seat_clipboard_source) {
+        if (wl_seat_clipboard_text)
+            free(wl_seat_clipboard_text);
+        wl_seat_clipboard_text = malloc(len + 1);
+        memcpy(wl_seat_clipboard_text, text, len);
+        wl_seat_clipboard_text[len] = '\0';
+        wl_seat_clipboard_len = len;
+        return;
+    }
+
     if (wl_seat_clipboard_text)
         free(wl_seat_clipboard_text);
     wl_seat_clipboard_text = malloc(len + 1);