diff --git a/flang/unittests/Runtime/CMakeLists.txt b/flang/unittests/Runtime/CMakeLists.txt
index 2c3f8c1a9e9ac..179e439917ff2 100644
--- a/flang/unittests/Runtime/CMakeLists.txt
+++ b/flang/unittests/Runtime/CMakeLists.txt
@@ -36,4 +36,6 @@ target_link_libraries(FlangRuntimeTests
   FortranRuntime
 )
 
+target_compile_definitions(FlangRuntimeTests PRIVATE NOT_EXE="$<TARGET_FILE:not>")
+
 add_subdirectory(CUDA)
diff --git a/flang/unittests/Runtime/CommandTest.cpp b/flang/unittests/Runtime/CommandTest.cpp
index b0c43ba01d8f3..05287d80e14f5 100644
--- a/flang/unittests/Runtime/CommandTest.cpp
+++ b/flang/unittests/Runtime/CommandTest.cpp
@@ -340,7 +340,7 @@ TEST_F(ZeroArguments, ECLValidCommandStatusSetSync) {
 }
 
 TEST_F(ZeroArguments, ECLGeneralErrorCommandErrorSync) {
-  OwningPtr<Descriptor> command{CharDescriptor("cat GeneralErrorCommand")};
+  OwningPtr<Descriptor> command{CharDescriptor(NOT_EXE)};
   bool wait{true};
   OwningPtr<Descriptor> exitStat{IntDescriptor(404)};
   OwningPtr<Descriptor> cmdStat{IntDescriptor(202)};
@@ -348,16 +348,14 @@ TEST_F(ZeroArguments, ECLGeneralErrorCommandErrorSync) {
 
   RTNAME(ExecuteCommandLine)
   (*command.get(), wait, exitStat.get(), cmdStat.get(), cmdMsg.get());
-#if defined(_WIN32)
   CheckDescriptorEqInt<std::int64_t>(exitStat.get(), 1);
+#if defined(_WIN32)
   CheckDescriptorEqInt<std::int64_t>(cmdStat.get(), 6);
   CheckDescriptorEqStr(cmdMsg.get(), "Invalid command lineXXXXXXXXX");
 #elif defined(_AIX)
-  CheckDescriptorEqInt<std::int64_t>(exitStat.get(), 2);
   CheckDescriptorEqInt<std::int64_t>(cmdStat.get(), 6);
   CheckDescriptorEqStr(cmdMsg.get(), "Invalid command lineXXXXXXXXX");
 #else
-  CheckDescriptorEqInt<std::int64_t>(exitStat.get(), 1);
   CheckDescriptorEqInt<std::int64_t>(cmdStat.get(), 3);
   CheckDescriptorEqStr(cmdMsg.get(), "Command line execution failed");
 #endif