diff --git a/bson/bsoncodec/default_value_decoders.go b/bson/bsoncodec/default_value_decoders.go
index e479c3585b..2ce119731b 100644
--- a/bson/bsoncodec/default_value_decoders.go
+++ b/bson/bsoncodec/default_value_decoders.go
@@ -24,7 +24,7 @@ import (
 
 var (
 	defaultValueDecoders DefaultValueDecoders
-	errCannotTruncate    = errors.New("float64 can only be truncated to an integer type when truncation is enabled")
+	errCannotTruncate    = errors.New("float64 can only be truncated to a lower precision type when truncation is enabled")
 )
 
 type decodeBinaryError struct {