diff --git a/src/Makefile.am b/src/Makefile.am
index bb5a605..e49a101 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,11 +1,7 @@
 webextension_LTLIBRARIES = liblightdm-webkit2-greeter-ext.la
 webextensiondir = $(libdir)/lightdm-webkit2-greeter
 
-if HAVE_GTK320
-ldmcssfile = lightdm-webkit2-greeter-application-3.20.css
-else
 ldmcssfile = lightdm-webkit2-greeter-application.css
-endif
 
 lightdm-webkit2-greeter-css-application.h: $(srcdir)/$(ldmcssfile) Makefile
 	$(AM_V_GEN) exo-csource --static --name=lightdm_webkit2_greeter_css_application $< >$@
diff --git a/src/lightdm-webkit2-greeter-application-3.20.css b/src/lightdm-webkit2-greeter-application-3.20.css
deleted file mode 100644
index a6aba4b..0000000
--- a/src/lightdm-webkit2-greeter-application-3.20.css
+++ /dev/null
@@ -1,3 +0,0 @@
-window {
-	background: #000000;
-}
\ No newline at end of file
diff --git a/src/lightdm-webkit2-greeter-application.css b/src/lightdm-webkit2-greeter-application.css
index 979bb85..8cd1492 100644
--- a/src/lightdm-webkit2-greeter-application.css
+++ b/src/lightdm-webkit2-greeter-application.css
@@ -1,3 +1,4 @@
+window,
 GtkWindow {
 	background: #000000;
 }