diff --git a/src/columns/ColIMask.cpp b/src/columns/ColIMask.cpp
index 154303959..912e9a1dd 100644
--- a/src/columns/ColIMask.cpp
+++ b/src/columns/ColIMask.cpp
@@ -37,7 +37,7 @@ extern Context context;
 ColumnIMask::ColumnIMask ()
 {
   _name       = "imask";
-  _type       = "number";
+  _type       = "numeric";
   _style      = "number";
   _label      = STRING_COLUMN_LABEL_MASK_IDX;
   _modifiable = false;