diff --git a/binaries/data/mods/public/simulation/templates/template_structure_resource_field.xml b/binaries/data/mods/public/simulation/templates/template_structure_resource_field.xml
index 06347cf50e..273c8716aa 100644
--- a/binaries/data/mods/public/simulation/templates/template_structure_resource_field.xml
+++ b/binaries/data/mods/public/simulation/templates/template_structure_resource_field.xml
@@ -25,7 +25,7 @@
   <Identity>
     <GenericName>Field</GenericName>
     <VisibleClasses datatype="tokens">Field</VisibleClasses>
-    <Tooltip>Harvest grain for food. Each subsequent gatherer works less efficient.</Tooltip>
+    <Tooltip>Harvest grain for food. Each subsequent gatherer works less efficiently.</Tooltip>
     <Icon>structures/field.png</Icon>
   </Identity>
   <Loot>