diff --git a/spec/API_specification/elementwise_functions.md b/spec/API_specification/elementwise_functions.md
index 3dcf0dcf4..c1d14d159 100644
--- a/spec/API_specification/elementwise_functions.md
+++ b/spec/API_specification/elementwise_functions.md
@@ -946,11 +946,11 @@ For floating-point operands,
 
 -   **x1**: _<array>_
 
-    -   first input array.
+    -   first input array. Should have a floating-point data type.
 
 -   **x2**: _<array>_
 
-    -   second input array. Must be compatible with `x1` (see {ref}`broadcasting`).
+    -   second input array. Must be compatible with `x1` (see {ref}`broadcasting`). Should have a floating-point data type.
 
 #### Returns