diff --git a/questionable/indexing.nim b/questionable/indexing.nim
index 72e30b7..b170430 100644
--- a/questionable/indexing.nim
+++ b/questionable/indexing.nim
@@ -1,23 +1,29 @@
 import std/macros
 
-macro `.?`*(expression: seq | string | openArray, brackets: untyped{nkBracket}): untyped =
+macro `.?`*(expression: seq | string, brackets: untyped{nkBracket}): untyped =
   # chain is of shape: (seq or string).?[index]
   let index = brackets[0]
   quote do:
     block:
       type T = typeof(`expression`[`index`])
-
-      when typeof(`expression`) is openArray:
-        if `index` >= `expression`.low and `index` <= `expression`.high:
-          `expression`[`index`].some
-        else:
-          T.none
+      let evaluated = `expression`
+      if `index` >= evaluated.low and `index` <= evaluated.high:
+        evaluated[`index`].some
       else:
-        let evaluated = `expression`
-        if `index` >= evaluated.low and `index` <= evaluated.high:
-          evaluated[`index`].some
+        T.none
+
+macro `.?`*(expression: openArray, brackets: untyped{nkBracket}): untyped =
+  # chain is of shape: openArray.?[index]
+  let index = brackets[0]
+  quote do:
+    block:
+      type T = typeof(`expression`[`index`])
+      proc safeGet(arr: openArray[T], i: int): ?T {.gensym.} =
+        if i >= arr.low and i <= arr.high:
+          arr[i].some
         else:
           T.none
+      safeGet(`expression`, `index`)
 
 macro `.?`*(expression: typed, brackets: untyped{nkBracket}): untyped =
   # chain is of shape: expression.?[index]
diff --git a/testmodules/options/test.nim b/testmodules/options/test.nim
index 26d52ff..a6c0e18 100644
--- a/testmodules/options/test.nim
+++ b/testmodules/options/test.nim
@@ -355,6 +355,11 @@ suite "optionals":
 
     checkOpenArray(@[1])
 
+  test ".?[] evaluates openArray expression only once":
+    var count = 0
+    discard (inc count; @[1].toOpenArray(0, 0)).?[0]
+    check count == 1
+
   test ".?[] can be followed by calls, operators and indexing":
     let table = @{"a": @[41, 42]}.toTable
     check table.?["a"].isSome