diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 39997e4..00f31f8 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -76,7 +76,7 @@ else()
     add_compile_options(
         -Wall
         -Wno-attributes
-        -Wno-unused-variables
+        -Wno-unused-variable
     )
 
     if (WARNINGS_AS_ERRORS)