diff --git a/src/compiler/glsl/glcpp/meson.build b/src/compiler/glsl/glcpp/meson.build
index 28c836381e4..89b17c504cc 100644
--- a/src/compiler/glsl/glcpp/meson.build
+++ b/src/compiler/glsl/glcpp/meson.build
@@ -65,7 +65,8 @@ glcpp = executable(
   build_by_default : false,
 )
 
-if with_any_opengl and with_tests
+# FIXME: these fail on windows due to whitespace differences
+if with_any_opengl and with_tests and host_machine.system() != 'windows'
   modes = ['unix', 'windows', 'oldmac', 'bizarro']
   if dep_valgrind.found()
     modes += ['valgrind']