diff --git a/meson.build b/meson.build
index b929d2d..25d2ac4 100644
--- a/meson.build
+++ b/meson.build
@@ -3,7 +3,7 @@ compiler = meson.get_compiler('c')
 ws = '/'
 
 if compiler.has_header('windows.h')
-  ws = '\\'
+  ws = '\\\\'
 endif
 
 vapidir = meson.project_source_root() / 'vapi'