diff --git a/var/spack/repos/builtin/packages/ecflow/package.py b/var/spack/repos/builtin/packages/ecflow/package.py
index ef3d98b784b949..01eaf1b165de65 100644
--- a/var/spack/repos/builtin/packages/ecflow/package.py
+++ b/var/spack/repos/builtin/packages/ecflow/package.py
@@ -72,6 +72,7 @@ class Ecflow(CMakePackage):
     # https://github.com/JCSDA/spack-stack/issues/1001
     # https://github.com/JCSDA/spack-stack/issues/1009
     patch("ctsapi_cassert.patch", when="@5.11.4")
+    patch("vfile_cassert.patch", when="@5.11.4")
 
     @when("@:4.13.0")
     def patch(self):
diff --git a/var/spack/repos/builtin/packages/ecflow/vfile_cassert.patch b/var/spack/repos/builtin/packages/ecflow/vfile_cassert.patch
new file mode 100644
index 00000000000000..871ae9d9d51851
--- /dev/null
+++ b/var/spack/repos/builtin/packages/ecflow/vfile_cassert.patch
@@ -0,0 +1,10 @@
+--- a/Viewer/ecflowUI/src/VFile.cpp	2024-08-28 12:20:27.000000000 +0000
++++ b/Viewer/ecflowUI/src/VFile.cpp	2024-08-28 12:20:51.000000000 +0000
+@@ -9,6 +9,7 @@
+ 
+ #include "VFile.hpp"
+ 
++#include <cassert>
+ #include <cstdio>
+ #include <cstdlib>
+ #include <cstring>