diff --git a/CMakeLists.txt b/CMakeLists.txt
index e12e040fe4..8fd1960518 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -834,7 +834,7 @@ else()
     set(ZIG1_RELEASE_ARG -OReleaseFast --strip)
 endif()
 if(ZIG_SINGLE_THREADED)
-  set(ZIG1_SINGLE_THREADED_ARG "--single-threaded")
+  set(ZIG1_SINGLE_THREADED_ARG "-fsingle-threaded")
 else()
   set(ZIG1_SINGLE_THREADED_ARG "")
 endif()