diff --git a/lingua_franca/lang/common_data_nl.py b/lingua_franca/lang/common_data_nl.py
index 1bed1b56..fc8affde 100644
--- a/lingua_franca/lang/common_data_nl.py
+++ b/lingua_franca/lang/common_data_nl.py
@@ -289,7 +289,7 @@
     15: 'vijftien',
     16: 'zestien',
     17: 'zeventien',
-    18: 'actien',
+    18: 'achttien',
     19: 'negentien',
     20: 'twintig',
     30: 'dertig',