diff --git a/libcxx/include/module.modulemap b/libcxx/include/module.modulemap
index 43072aa0fb0f1..3c92732b52ecf 100644
--- a/libcxx/include/module.modulemap
+++ b/libcxx/include/module.modulemap
@@ -2285,6 +2285,10 @@ module std [system] {
     header "__assert"
     export *
   }
+  module assertion_handler {
+    header "__assertion_handler" // generated via CMake
+    export *
+  }
 
   module undef_macros {
     textual header "__undef_macros"