diff --git a/modules/mono/glue/cs_files/Mathf.cs b/modules/mono/glue/cs_files/Mathf.cs
index 6951ace4fc8d..476396e9a3d3 100644
--- a/modules/mono/glue/cs_files/Mathf.cs
+++ b/modules/mono/glue/cs_files/Mathf.cs
@@ -71,7 +71,7 @@ namespace Godot
 
         public static int Decimals(float step)
         {
-            return Decimals(step);
+            return Decimals((decimal)step);
         }
 
         public static int Decimals(decimal step)