diff --git a/testsuite/css/parser/Makefile.am b/testsuite/css/parser/Makefile.am
index 09eaa6ef71..69be6c7bb7 100644
--- a/testsuite/css/parser/Makefile.am
+++ b/testsuite/css/parser/Makefile.am
@@ -407,6 +407,7 @@ test_data = \
 	value-inherit-shorthand.css \
 	value-inherit-shorthand.ref.css \
 	value-initial.css \
+	value-initial.errors \
 	value-initial-shorthand.css \
 	value-initial-shorthand.ref.css \
 	value-none.css \
diff --git a/testsuite/css/parser/value-initial.css b/testsuite/css/parser/value-initial.css
index 7e72166182..1bf604fdd0 100644
--- a/testsuite/css/parser/value-initial.css
+++ b/testsuite/css/parser/value-initial.css
@@ -1,4 +1,5 @@
 * {
+  -gtk-icon-shadow: initial;
   background-clip: initial;
   background-color: initial;
   background-image: initial;
@@ -32,7 +33,6 @@
   font-style: initial;
   font-variant: initial;
   font-weight: initial;
-  icon-shadow: initial;
   margin-bottom: initial;
   margin-left: initial;
   margin-right: initial;
diff --git a/testsuite/css/parser/value-initial.errors b/testsuite/css/parser/value-initial.errors
new file mode 100644
index 0000000000..f1d23c5f48
--- /dev/null
+++ b/testsuite/css/parser/value-initial.errors
@@ -0,0 +1 @@
+value-initial.css:30: error: GTK_CSS_PROVIDER_ERROR_DEPRECATED