diff --git a/columns_twice.nim b/columns_twice.nim
new file mode 100644
index 0000000..daf28c4
--- /dev/null
+++ b/columns_twice.nim
@@ -0,0 +1,25 @@
+import nimib, nimislides
+
+nbInit(theme = revealTheme)
+slide:
+  columns:
+    column:
+      nbText: "Left Column"
+    column:
+      nbText: "Right Column"
+const showError = true
+when showError:
+  slide:
+    columns:
+      column: # compile error here
+        nbText: "Left Column"
+      column:
+        nbText: "Right Column"
+#[
+  Error: ambiguous call; both columns_twice.column(bodyInner`gensym13: untyped)
+  [template declared in /Users/pietroppeter/nimib-reveal/src/nimiSlides.nim(482, 12)]
+  and columns_twice.column(bodyInner`gensym63: untyped)
+  [template declared in /Users/pietroppeter/nimib-reveal/src/nimiSlides.nim(482, 12)]
+  match for: ()
+]#
+nbSave