diff --git a/build-support/macros-and-definitions.cmake b/build-support/macros-and-definitions.cmake
index 997db6933..18825092b 100644
--- a/build-support/macros-and-definitions.cmake
+++ b/build-support/macros-and-definitions.cmake
@@ -245,7 +245,7 @@ if("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
     )
   endif()
   if((CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "12.1.0")
-          AND (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "12.3.2")
+     AND (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "12.3.2")
   )
     # Disable warnings-as-errors for certain versions of GCC when C++20 is
     # enabled https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105545
diff --git a/ns3 b/ns3
index fd27bfa59..8a87363d4 100755
--- a/ns3
+++ b/ns3
@@ -878,7 +878,7 @@ def cmake_build(current_cmake_cache_folder, output, jobs, target=None, dry_run=F
     cmake, version = cmake_check_version()
 
     # Older CMake versions don't accept the number of jobs directly
-    jobs_part = ("-j %d" % jobs) if parse_version(version) >= parse_version("3.12.0") else ""
+    jobs_part = ("-j %d" % jobs)
     target_part = (" --target %s" % target) if target else ""
     cmake_build_command = "%s --build . %s%s" % (cmake, jobs_part, target_part)