diff --git a/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_linux.properties b/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_linux.properties
index d5ad4033..95ffe0c6 100644
--- a/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_linux.properties
+++ b/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_linux.properties
@@ -24,3 +24,4 @@
 #
 # suppress inspection "UnusedProperty" for whole file
 #
+custom_linux_property = value
diff --git a/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_mac.properties b/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_mac.properties
index d5ad4033..74bf644f 100644
--- a/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_mac.properties
+++ b/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_mac.properties
@@ -24,3 +24,4 @@
 #
 # suppress inspection "UnusedProperty" for whole file
 #
+custom_macos_property = value
diff --git a/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_ui.properties b/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_ui.properties
index d5ad4033..70352386 100644
--- a/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_ui.properties
+++ b/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_ui.properties
@@ -24,3 +24,4 @@
 #
 # suppress inspection "UnusedProperty" for whole file
 #
+custom_ui_property = value
diff --git a/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_windows.properties b/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_windows.properties
index d5ad4033..3a29d117 100644
--- a/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_windows.properties
+++ b/core/src/test/resources/com/github/weisj/darklaf/core/theme/my_custom_theme_windows.properties
@@ -24,3 +24,4 @@
 #
 # suppress inspection "UnusedProperty" for whole file
 #
+custom_windows_property = value