diff --git a/Customization.md b/Customization.md
index 3f44e67..93c9acf 100644
--- a/Customization.md
+++ b/Customization.md
@@ -95,7 +95,7 @@ when indexing.
 Conversely, you can add more arguments using `clang.extraArgs` (this could
 also be done through the `.ccls` file).
 
-Example: `{"clang": {"excludeArgs": "-frounding-math"}}`
+Example: `{"clang": {"excludeArgs": ["-frounding-math"]}}`
 
 #### `clang.pathMappings`