diff --git a/main/src/com/google/refine/expr/functions/math/Floor.java b/main/src/com/google/refine/expr/functions/math/Floor.java
index 7b8d5552d..ccf9aa35f 100644
--- a/main/src/com/google/refine/expr/functions/math/Floor.java
+++ b/main/src/com/google/refine/expr/functions/math/Floor.java
@@ -57,7 +57,7 @@ public class Floor implements Function {
         throws JSONException {
     
         writer.object();
-        writer.key("description"); writer.value("Returns the floor of a number");
+        writer.key("description"); writer.value("Returns the floor of a number as an integer");
         writer.key("params"); writer.value("number d");
         writer.key("returns"); writer.value("number");
         writer.endObject();