diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index 16202a9e87..2be8a74ba6 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -2,6 +2,7 @@
 ------------------------------------------------------------------------
 - Feature: [#5877] Allow up to 16 stations to be synchronised
 - Fix: [#3589] Crash due to invalid footpathEntry in path_paint
+- Fix: [#4455] Crash in window_sign_invalidate due to original bug
 - Fix: [#4931] Crash in path_paint - footpathentry was null
 - Fix: [#5768] Prevent loading non-existent title sequences.
 - Fix: [#5858] Crash when using custom ride with no colour presets.
diff --git a/src/openrct2/windows/sign.c b/src/openrct2/windows/sign.c
index f83de45189..db053f5c40 100644
--- a/src/openrct2/windows/sign.c
+++ b/src/openrct2/windows/sign.c
@@ -184,7 +184,7 @@ void window_sign_open(rct_windownumber number)
 
     w->list_information_type = map_element->properties.scenerymultiple.colour[0] & 0x1F;
     w->var_492 = map_element->properties.scenerymultiple.colour[1] & 0x1F;
-    w->var_48C = map_element->properties.scenerymultiple.type;
+    w->var_48C = map_element->properties.scenerymultiple.type & MAP_ELEMENT_LARGE_TYPE_MASK;
 
     view_x += 16;
     view_y += 16;