diff --git a/components/style/properties/longhands/inherited_text.mako.rs b/components/style/properties/longhands/inherited_text.mako.rs
index 45b3ee35aa1..3efd8123bd1 100644
--- a/components/style/properties/longhands/inherited_text.mako.rs
+++ b/components/style/properties/longhands/inherited_text.mako.rs
@@ -175,7 +175,7 @@ ${helpers.predefined_type(
 
 <%helpers:single_keyword
     name="white-space"
-    values="normal pre nowrap pre-wrap pre-line"
+    values="normal pre nowrap pre-wrap pre-line break-spaces"
     extra_gecko_values="-moz-pre-space"
     gecko_enum_prefix="StyleWhiteSpace"
     needs_conversion="True"
@@ -193,7 +193,8 @@ ${helpers.predefined_type(
                 SpecifiedValue::Pre => false,
                 SpecifiedValue::Normal |
                 SpecifiedValue::PreWrap |
-                SpecifiedValue::PreLine => true,
+                SpecifiedValue::PreLine |
+                SpecifiedValue::BreakSpaces => true,
             }
         }
 
@@ -203,7 +204,8 @@ ${helpers.predefined_type(
                 SpecifiedValue::Nowrap => false,
                 SpecifiedValue::Pre |
                 SpecifiedValue::PreWrap |
-                SpecifiedValue::PreLine => true,
+                SpecifiedValue::PreLine |
+                SpecifiedValue::BreakSpaces => true,
             }
         }
 
@@ -213,7 +215,8 @@ ${helpers.predefined_type(
                 SpecifiedValue::Nowrap |
                 SpecifiedValue::PreLine => false,
                 SpecifiedValue::Pre |
-                SpecifiedValue::PreWrap => true,
+                SpecifiedValue::PreWrap |
+                SpecifiedValue::BreakSpaces => true,
             }
         }
     }