diff --git a/examples/nim/default.nim b/examples/nim/default.nim
index 7f5145c5d..c71ddd96a 100644
--- a/examples/nim/default.nim
+++ b/examples/nim/default.nim
@@ -1,3 +1,3 @@
 # Type your code here, or load an example.
-proc square(num: int): int =
+proc square(num: int): int {.exportc.} =
   num * num