diff --git a/src/version.c b/src/version.c
index 1ae8910..8518667 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1755,
+/**/
     1754,
 /**/
     1753,
diff --git a/src/window.c b/src/window.c
index 8466c46..3937fc5 100644
--- a/src/window.c
+++ b/src/window.c
@@ -4865,6 +4865,7 @@
     vim_free(wp->w_thumb_highlight);
     vim_free(wp->w_popup_title);
     list_unref(wp->w_popup_mask);
+    vim_free(wp->w_popup_mask_cells);
 #endif
 
 #ifdef FEAT_SYN_HL