diff --git a/src/common.h b/src/common.h
index 593480be..f6c82070 100644
--- a/src/common.h
+++ b/src/common.h
@@ -1893,21 +1893,6 @@ free_fence(session_t *ps, XSyncFence *pfence) {
 #define free_fence(ps, pfence) ((void) 0)
 #endif
 
-/**
- * Crop a rectangle by another rectangle.
- *
- * psrc and pdst cannot be the same.
- */
-static inline void
-rect_crop(rect_t *restrict pdst, const rect_t *psrc, const rect_t *pbound) {
-  assert(psrc != pdst);
-  assert(psrc != pbound);
-  pdst->x1 = max_i(psrc->x1, pbound->x1);
-  pdst->y1 = max_i(psrc->y1, pbound->y1);
-  pdst->x2 = min_i(psrc->x2, pbound->x2);
-  pdst->y2 = min_i(psrc->y2, pbound->y2);
-}
-
 /**
  * Check if a rectangle includes the whole screen.
  */