diff --git a/src/meson.build b/src/meson.build
index 1e528727a4f..55dc84b2c27 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -134,6 +134,8 @@ add_project_arguments(
   '-X preliminary_late_includes_cy28=True',
   language: 'cython',
 )
+# Disable sanity check as a workaround for https://github.com/sagemath/cysignals/issues/194
+add_project_arguments('-U_FORTIFY_SOURCE', language : ['c', 'cpp'])
 
 inc_cpython = include_directories('sage/cpython')
 inc_rings = include_directories('sage/rings')