diff --git a/src/main/kotlin/dev/fyloz/colorrecipesexplorer/rest/MaterialTypeController.kt b/src/main/kotlin/dev/fyloz/colorrecipesexplorer/rest/MaterialTypeController.kt
index fb239a4..6123066 100644
--- a/src/main/kotlin/dev/fyloz/colorrecipesexplorer/rest/MaterialTypeController.kt
+++ b/src/main/kotlin/dev/fyloz/colorrecipesexplorer/rest/MaterialTypeController.kt
@@ -38,7 +38,7 @@ class MaterialTypeController(private val materialTypeService: MaterialTypeServic
         }
 
     @DeleteMapping("{id}")
-    @PreAuthorize("hasAuthority('REMOVE_MATERIAL_TYPEs')")
+    @PreAuthorize("hasAuthority('REMOVE_MATERIAL_TYPES')")
     fun deleteById(@PathVariable id: Long) =
         noContent {
             materialTypeService.deleteById(id)