diff --git a/components/style/properties/data.py b/components/style/properties/data.py
index d8244ef8622..e3f37e23570 100644
--- a/components/style/properties/data.py
+++ b/components/style/properties/data.py
@@ -155,7 +155,7 @@ class Longhand(object):
                  predefined_type=None, custom_cascade=False, experimental=False, internal=False,
                  need_clone=False, need_index=False, gecko_ffi_name=None,
                  allowed_in_keyframe_block=True, cast_type='u8',
-                 has_uncacheable_values=False, logical=False, alias=None, extra_prefixes=None, boxed=False,
+                 logical=False, alias=None, extra_prefixes=None, boxed=False,
                  flags=None, allowed_in_page_rule=False, allow_quirks=False, ignored_when_colors_disabled=False,
                  gecko_pref_ident=None, vector=False, need_animatable=False):
         self.name = name
@@ -171,7 +171,6 @@ class Longhand(object):
         self.custom_cascade = custom_cascade
         self.internal = internal
         self.need_index = need_index
-        self.has_uncacheable_values = has_uncacheable_values
         self.gecko_ffi_name = gecko_ffi_name or "m" + self.camel_case
         self.derived_from = (derived_from or "").split()
         self.cast_type = cast_type
diff --git a/components/style/properties/longhand/background.mako.rs b/components/style/properties/longhand/background.mako.rs
index 4ec1d3151e8..69dfc229d77 100644
--- a/components/style/properties/longhand/background.mako.rs
+++ b/components/style/properties/longhand/background.mako.rs
@@ -24,7 +24,6 @@ ${helpers.predefined_type("background-image", "ImageLayer",
     spec="https://drafts.csswg.org/css-backgrounds/#the-background-image",
     vector="True",
     animation_value_type="discrete",
-    has_uncacheable_values="True" if product == "gecko" else "False",
     ignored_when_colors_disabled="True",
     flags="APPLIES_TO_FIRST_LETTER APPLIES_TO_FIRST_LINE APPLIES_TO_PLACEHOLDER")}
 
diff --git a/components/style/properties/longhand/border.mako.rs b/components/style/properties/longhand/border.mako.rs
index 3850e99e983..9cb342a162e 100644
--- a/components/style/properties/longhand/border.mako.rs
+++ b/components/style/properties/longhand/border.mako.rs
@@ -211,7 +211,6 @@ ${helpers.predefined_type("border-image-source", "ImageLayer",
     spec="https://drafts.csswg.org/css-backgrounds/#the-background-image",
     vector=False,
     animation_value_type="discrete",
-    has_uncacheable_values=False,
     flags="APPLIES_TO_FIRST_LETTER",
     boxed="True")}
 
diff --git a/components/style/properties/longhand/svg.mako.rs b/components/style/properties/longhand/svg.mako.rs
index 9bbd5e22463..5fe3f1f96a0 100644
--- a/components/style/properties/longhand/svg.mako.rs
+++ b/components/style/properties/longhand/svg.mako.rs
@@ -167,5 +167,4 @@ ${helpers.predefined_type("mask-image", "ImageLayer",
     products="gecko",
     extra_prefixes="webkit",
     animation_value_type="discrete",
-    flags="CREATES_STACKING_CONTEXT",
-    has_uncacheable_values="True" if product == "gecko" else "False")}
+    flags="CREATES_STACKING_CONTEXT")}