diff --git a/data/start-cosmic b/data/start-cosmic
index e0104ed..5741630 100755
--- a/data/start-cosmic
+++ b/data/start-cosmic
@@ -39,17 +39,19 @@ export QT_ENABLE_HIGHDPI_SCALING=1
 export DCONF_PROFILE=cosmic
 
 # Set the QT platform theme to CuteCosmic. Fallback to qt6ct if CuteCosmic is not installed.
-export QT_QPA_PLATFORMTHEME=cosmic
-for QT_PLUGIN_PATH in /usr/lib{*,/*}/qt6/plugins; do
-    if [ -f "${QT_PLUGIN_PATH}/platformthemes/libcutecosmictheme.so" ]; then
-        # CuteCosmic found, no need for a fallback.
-        export QT_QPA_PLATFORMTHEME=cosmic
-        break
-    elif [ -f "${QT_PLUGIN_PATH}/platformthemes/libqt6ct.so" ]; then
-        # Fallback to qt6ct, but keep looking for CuteCosmic.
-        export QT_QPA_PLATFORMTHEME=qt6ct
-    fi
-done
+if [ -z "$QT_QPA_PLATFORMTHEME" ]; then
+    export QT_QPA_PLATFORMTHEME=cosmic
+    for QT_PLUGIN_PATH in /usr/lib{*,/*}/qt6/plugins; do
+        if [ -f "${QT_PLUGIN_PATH}/platformthemes/libcutecosmictheme.so" ]; then
+            # CuteCosmic found, no need for a fallback.
+            export QT_QPA_PLATFORMTHEME=cosmic
+            break
+        elif [ -f "${QT_PLUGIN_PATH}/platformthemes/libqt6ct.so" ]; then
+            # Fallback to qt6ct, but keep looking for CuteCosmic.
+            export QT_QPA_PLATFORMTHEME=qt6ct
+        fi
+    done
+fi
 
 # Start gnome keyring components if the daemon is active
 # -> check if /run/user/$UID/keyring exists