diff --git a/environments/hlrs/spack.yaml b/environments/hlrs/spack.yaml
index 858d80a..9ec9395 100644
--- a/environments/hlrs/spack.yaml
+++ b/environments/hlrs/spack.yaml
@@ -4,7 +4,7 @@ spack:
     - core_compiler: [gcc@7.5]
     - compilers: [gcc@13.2, cce@18.0]
     - mpis: [cray-mpich@8.1.30]
-    - cflags_noerror_implicit: ['cflags="-Wno-error=implicit-function-declaration -Wno-error=implicit-int -Wno-error=int-conversion"']
+    - cflags_noerror_implicit: ['cflags="-Wno-error=implicit-function-declaration -Wno-error=implicit-int -Wno-error=int-conversion -Wno-error=incompatible-pointer-types"']
   packages:
     all:
       prefer: ['%gcc@7.5']