diff --git a/compiler/mono/src/layout.rs b/compiler/mono/src/layout.rs
index 668ba8f72f..b6c1e22bfe 100644
--- a/compiler/mono/src/layout.rs
+++ b/compiler/mono/src/layout.rs
@@ -877,7 +877,7 @@ impl<'a> Builtin<'a> {
 
     /// Number of machine words in an empty one of these
     pub const STR_WORDS: u32 = 2;
-    pub const DICT_WORDS: u32 = 6;
+    pub const DICT_WORDS: u32 = 3;
     pub const SET_WORDS: u32 = Builtin::DICT_WORDS; // Set is an alias for Dict with {} for value
     pub const LIST_WORDS: u32 = 2;