diff --git a/src/value/mod.rs b/src/value/mod.rs
index 59f19ff..8a04ece 100644
--- a/src/value/mod.rs
+++ b/src/value/mod.rs
@@ -57,6 +57,7 @@ impl Display for Value {
                     f,
                     "{}",
                     vals.iter()
+                        .filter(|x| !x.is_null())
                         .map(std::string::ToString::to_string)
                         .collect::<Vec<String>>()
                         .join(sep.as_str()),
@@ -65,6 +66,7 @@ impl Display for Value {
                     f,
                     "[{}]",
                     vals.iter()
+                        .filter(|x| !x.is_null())
                         .map(std::string::ToString::to_string)
                         .collect::<Vec<String>>()
                         .join(sep.as_str()),
diff --git a/tests/list.rs b/tests/list.rs
index f32c415..e9eb30e 100644
--- a/tests/list.rs
+++ b/tests/list.rs
@@ -164,3 +164,8 @@ test!(
     "a {\n  color: [1,];\n}\n",
     "a {\n  color: [1];\n}\n"
 );
+test!(
+    null_values_in_list_ommitted,
+    "a {\n  color: 1, null, null;;\n}\n",
+    "a {\n  color: 1;\n}\n"
+);