diff --git a/lib/layouts/AEA.layout b/lib/layouts/AEA.layout
index 9e932fb23e..0f859f9f4a 100644
--- a/lib/layouts/AEA.layout
+++ b/lib/layouts/AEA.layout
@@ -32,7 +32,7 @@ NoStyle		LyX-Code
 NoStyle		Verse
 NoStyle		Address
 NoStyle		Right_Address
-NoStyle		Acknowledgment*
+NoStyle		Acknowledgement*
 NoStyle		Acknowledgment*[[theorem]]
 NoStyle		Algorithm*
 NoStyle		Assumption*
diff --git a/lib/layouts/svglobal.layout b/lib/layouts/svglobal.layout
index bb2b82a010..ac5c70ece4 100644
--- a/lib/layouts/svglobal.layout
+++ b/lib/layouts/svglobal.layout
@@ -54,7 +54,7 @@ NoStyle Sol
 NoStyle Abstract*
 NoStyle TOC_Title
 NoStyle TOC_Author
-NoStyle Acknowledgments
+NoStyle Acknowledgements
 NoStyle Acknowledgments[[credits]]
 
 NoStyle Keywords
diff --git a/lib/layouts/svglobal3.layout b/lib/layouts/svglobal3.layout
index 3ddde75e6f..79cf0a9c82 100644
--- a/lib/layouts/svglobal3.layout
+++ b/lib/layouts/svglobal3.layout
@@ -50,7 +50,7 @@ NoStyle TOC_Title
 NoStyle TOC_Author
 NoStyle Proof(smartQED)
 
-NoStyle Acknowledgment
+NoStyle Acknowledgement
 NoStyle Acknowledgment[[credits]]
 NoStyle Keywords