diff --git a/tests/lib/cpp/cxx/testcase.yaml b/tests/lib/cpp/cxx/testcase.yaml
index 8535faf9c30f..eaacc89e2da2 100644
--- a/tests/lib/cpp/cxx/testcase.yaml
+++ b/tests/lib/cpp/cxx/testcase.yaml
@@ -34,19 +34,12 @@ tests:
   # -std=c++98)
   cpp.main.cpp98:
     arch_exclude: posix
-    # Exclude nRF54L series, nRF54H20 and nRF9280 as Nordic HAL is not compatible with C++98.
+    # Exclude ARM cores from nRF54H, nRF92n and RF54L series as Nordic HAL is not
+    # compatible with C++98.
     # Exclude CONFIG_HAS_RENESAS_RA_FSP and CONFIG_HAS_RENESAS_RZ_FSP as Renesas HALs are not
     # compatible with C++98.
-    platform_exclude:
-      - nrf54l15dk/nrf54l05/cpuapp
-      - nrf54l15dk/nrf54l10/cpuapp
-      - nrf54l15dk/nrf54l15/cpuapp
-      - nrf54l20pdk/nrf54l20/cpuapp
-      - nrf54h20dk/nrf54h20/cpuapp
-      - nrf54h20dk/nrf54h20/cpurad
-      - nrf9280pdk/nrf9280/cpuapp
-      - nrf9280pdk/nrf9280/cpurad
-    filter: not CONFIG_HAS_RENESAS_RA_FSP and not CONFIG_HAS_RENESAS_RZ_FSP
+    filter: not CONFIG_HAS_RENESAS_RA_FSP and not CONFIG_HAS_RENESAS_RZ_FSP and
+            not (CONFIG_CPU_CORTEX_M and (CONFIG_NRF_PLATFORM_HALTIUM or CONFIG_SOC_SERIES_NRF54LX))
     build_only: true
     extra_configs:
       - CONFIG_STD_CPP98=y