diff --git a/.github/workflows/NVHPC.yml b/.github/workflows/NVHPC.yml
index 6992f59f1..d8cb2341b 100644
--- a/.github/workflows/NVHPC.yml
+++ b/.github/workflows/NVHPC.yml
@@ -47,6 +47,11 @@ jobs:
             hostcxx: nvhpc-22.9
             os: ubuntu-22.04
             container: nvcr.io/nvidia/nvhpc:22.9-devel-cuda11.7-ubuntu22.04
+          - cuda: "11.7"
+            cuda_arch: "35"
+            hostcxx: nvhpc-22.7
+            os: ubuntu-22.04
+            container: nvcr.io/nvidia/nvhpc:22.7-devel-cuda11.7-ubuntu22.04
           - cuda: "11.7"
             cuda_arch: "35"
             hostcxx: nvhpc-22.5
diff --git a/cmake/warnings.cmake b/cmake/warnings.cmake
index 14a7ea7ac..19ada8807 100644
--- a/cmake/warnings.cmake
+++ b/cmake/warnings.cmake
@@ -119,9 +119,12 @@ if(NOT COMMAND flamegpu_suppress_some_compiler_warnings)
             # nvc++ etc do not appear to have an equivalent to -isystem. Rather than more pragma warning soup, just tone down warnings when using nvc++ as appropriate. 
             target_compile_options(${SSCW_TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:CUDA>:SHELL:-Xcudafe --diag_suppress=code_is_unreachable>")
             target_compile_options(${SSCW_TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:SHELL:--diag_suppress=code_is_unreachable>")
-            # older nvhpc as host compiler warns for intentional declared but never referenced parameters
-            target_compile_options(${SSCW_TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:SHELL:-Wno-unused-but-set-parameter>")
-            target_compile_options(${SSCW_TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:CUDA>:SHELL:-Xcompiler -Wno-unused-but-set-parameter>")
+            # older nvhpc as host compiler warns for intentional declared but never referenced parameters. only supported from 22.7/9
+            message(FATAL_ERROR "${CMAKE_CXX_COMPILER_VERSION}")
+            if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "22.7")
+                target_compile_options(${SSCW_TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:SHELL:-Wno-unused-but-set-parameter>")
+                target_compile_options(${SSCW_TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:CUDA>:SHELL:-Xcompiler -Wno-unused-but-set-parameter>")
+            endif()
         else()
             # Linux specific warning suppressions
         endif()