diff --git a/autotests/dupetest.cpp b/autotests/dupetest.cpp
--- a/autotests/dupetest.cpp
+++ b/autotests/dupetest.cpp
@@ -85,7 +85,9 @@
 #endif
         }
         for (auto dir : ICON_DIRS) {
-            dupesForDirectory(PROJECT_SOURCE_DIR + QStringLiteral("/") + dir);
+            for (auto type : ICON_TYPES) {
+                dupesForDirectory(PROJECT_SOURCE_DIR + QStringLiteral("/") + dir + QStringLiteral("/") + type);
+            }
         }
     }
 };
diff --git a/autotests/testdata.h.cmake b/autotests/testdata.h.cmake
--- a/autotests/testdata.h.cmake
+++ b/autotests/testdata.h.cmake
@@ -1,2 +1,3 @@
 #define PROJECT_SOURCE_DIR "${PROJECT_SOURCE_DIR}"
 #define ICON_DIRS { "icons", "icons-dark" }
+#define ICON_TYPES { "actions", "animations", "applets", "apps", "categories", "devices", "emblems", "emotes", "mimetypes", "places", "preferences", "status" }