diff --git a/tests/system/README b/tests/system/README
index 7dff67a84d0..d76526a6f73 100644
--- a/tests/system/README
+++ b/tests/system/README
@@ -18,7 +18,6 @@ Qt version for the respective toolchain with the components (if available):
 The exact versions and toolchains are:
 
 Linux:
-Qt 5.4.1 (gcc)
 Qt 5.10.1 (gcc)
 Qt 5.14.1 (gcc)
 Qt 6.2.4 (gcc)
diff --git a/tests/system/shared/classes.py b/tests/system/shared/classes.py
index 3451da354ff..4659dda5535 100644
--- a/tests/system/shared/classes.py
+++ b/tests/system/shared/classes.py
@@ -25,7 +25,7 @@ class Targets:
     @staticmethod
     def availableTargetClasses(ignoreValidity=False):
         availableTargets = set(Targets.ALL_TARGETS)
-        if platform.system() == 'Darwin':
+        if platform.system() not in ('Windows', 'Microsoft'):
             availableTargets.remove(Targets.DESKTOP_5_4_1_GCC)
         return availableTargets
 
@@ -84,7 +84,7 @@ class QtPath:
     def getPaths(pathSpec):
         qtTargets = [Targets.DESKTOP_5_10_1_DEFAULT, Targets.DESKTOP_5_14_1_DEFAULT,
                      Targets.DESKTOP_6_2_4]
-        if platform.system() != 'Darwin':
+        if platform.system() in ('Windows', 'Microsoft'):
             qtTargets.append(Targets.DESKTOP_5_4_1_GCC)
         if pathSpec == QtPath.DOCS:
             return map(lambda target: QtPath.docsPath(target), qtTargets)
diff --git a/tests/system/shared/project.py b/tests/system/shared/project.py
index cdf5290d895..b87920b4f76 100644
--- a/tests/system/shared/project.py
+++ b/tests/system/shared/project.py
@@ -533,7 +533,7 @@ def __getSupportedPlatforms__(text, templateName, getAsStrings=False, ignoreVali
             result = result.union(set([Targets.DESKTOP_5_10_1_DEFAULT,
                                        Targets.DESKTOP_5_14_1_DEFAULT,
                                        Targets.DESKTOP_6_2_4]))
-            if platform.system() != 'Darwin':
+            if platform.system() in ('Windows', 'Microsoft'):
                 result.add(Targets.DESKTOP_5_4_1_GCC)
     elif 'Platform independent' in text:
         result = Targets.desktopTargetClasses()