diff --git a/codegen/luau/runtime/numeric_tb.lua b/codegen/luau/runtime/numeric_tb.lua
index 91f33e6..c7775c2 100644
--- a/codegen/luau/runtime/numeric_tb.lua
+++ b/codegen/luau/runtime/numeric_tb.lua
@@ -31,7 +31,7 @@ function Numeric.into_u32(data)
 end
 
 function Numeric.from_u64(value)
-	return from_u32(bit_and(value), bit_and(value / 0x100000000))
+	return from_u32(bit_and(value % 0x100000000), bit_and(value / 0x100000000))
 end
 
 function Numeric.into_u64(value)
diff --git a/codegen/luau/runtime/numeric_v3.lua b/codegen/luau/runtime/numeric_v3.lua
index 82b4816..0f51d09 100644
--- a/codegen/luau/runtime/numeric_v3.lua
+++ b/codegen/luau/runtime/numeric_v3.lua
@@ -47,7 +47,7 @@ function Numeric.into_u32(value)
 end
 
 function Numeric.from_u64(value)
-	return from_u32(bit_and(value), bit_and(value / 0x100000000))
+	return from_u32(bit_and(value % 0x100000000), bit_and(value / 0x100000000))
 end
 
 function Numeric.into_u64(value)