diff --git a/src/config.rs b/src/config.rs
index 0b1f1e0..fb8ed81 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -402,39 +402,26 @@ impl TryFrom<PolicyElement> for OptionalPolicy {
     }
 }
 
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Default, Deserialize, PartialEq)]
 pub struct ReceiveOperation {
-    pub error: String,
-    pub interface: String,
-    pub max_fds: u32,
-    pub min_fds: u32,
-    pub path: String,
-    pub sender: String,
-    pub r#type: MessageType,
-}
-impl Default for ReceiveOperation {
-    fn default() -> Self {
-        Self {
-            error: String::from("*"),
-            interface: String::from("*"),
-            max_fds: u32::MAX,
-            min_fds: 0,
-            path: String::from("*"),
-            r#type: MessageType::Any,
-            sender: String::default(),
-        }
-    }
+    pub error: Option<String>,
+    pub interface: Option<String>,
+    pub max_fds: Option<u32>,
+    pub min_fds: Option<u32>,
+    pub path: Option<String>,
+    pub sender: Option<String>,
+    pub r#type: Option<MessageType>,
 }
 impl From<RuleAttributes> for ReceiveOperation {
     fn from(value: RuleAttributes) -> Self {
         Self {
-            error: value.receive_error.unwrap_or(String::from("*")),
-            interface: value.receive_interface.unwrap_or(String::from("*")),
-            max_fds: value.max_fds.unwrap_or(u32::MAX),
-            min_fds: value.min_fds.unwrap_or(0),
-            path: value.receive_path.unwrap_or(String::from("*")),
-            sender: value.receive_sender.unwrap_or(String::from("*")),
-            r#type: value.receive_type.unwrap_or_default(),
+            error: value.receive_error,
+            interface: value.receive_interface,
+            max_fds: value.max_fds,
+            min_fds: value.min_fds,
+            path: value.receive_path,
+            sender: value.receive_sender,
+            r#type: value.receive_type,
         }
     }
 }
@@ -544,30 +531,16 @@ fn rules_try_from_rule_elements(value: Vec<RuleElement>) -> Result<Vec<Rule>> {
 
 pub type Rule = (Access, Operation);
 
-#[derive(Clone, Debug, Deserialize, PartialEq)]
+#[derive(Clone, Debug, Default, Deserialize, PartialEq)]
 pub struct SendOperation {
     pub broadcast: Option<bool>,
     pub destination: Option<Destination>,
-    pub error: String,
-    pub interface: String,
-    pub max_fds: u32,
-    pub min_fds: u32,
-    pub path: String,
-    pub r#type: MessageType,
-}
-impl Default for SendOperation {
-    fn default() -> Self {
-        Self {
-            broadcast: None,
-            destination: None,
-            error: String::from("*"),
-            interface: String::from("*"),
-            max_fds: u32::MAX,
-            min_fds: 0,
-            path: String::from("*"),
-            r#type: MessageType::default(),
-        }
-    }
+    pub error: Option<String>,
+    pub interface: Option<String>,
+    pub max_fds: Option<u32>,
+    pub min_fds: Option<u32>,
+    pub path: Option<String>,
+    pub r#type: Option<MessageType>,
 }
 impl From<RuleAttributes> for SendOperation {
     fn from(value: RuleAttributes) -> Self {
@@ -592,12 +565,12 @@ impl From<RuleAttributes> for SendOperation {
         Self {
             broadcast: value.send_broadcast,
             destination,
-            error: value.send_error.unwrap_or(String::from("*")),
-            interface: value.send_interface.unwrap_or(String::from("*")),
-            max_fds: value.max_fds.unwrap_or(u32::MAX),
-            min_fds: value.min_fds.unwrap_or(0),
-            path: value.send_path.unwrap_or(String::from("*")),
-            r#type: value.send_type.unwrap_or_default(),
+            error: value.send_error,
+            interface: value.send_interface,
+            max_fds: value.max_fds,
+            min_fds: value.min_fds,
+            path: value.send_path,
+            r#type: value.send_type,
         }
     }
 }
@@ -840,24 +813,28 @@ mod tests {
                                     destination: Some(Destination::Name(String::from(
                                         "org.freedesktop.DBus"
                                     ))),
-                                    error: String::from("something bad"),
-                                    interface: String::from("org.freedesktop.systemd1.Activator"),
-                                    max_fds: 128,
-                                    min_fds: 12,
-                                    path: String::from("/org/freedesktop"),
-                                    r#type: MessageType::Signal
+                                    error: Some(String::from("something bad")),
+                                    interface: Some(String::from(
+                                        "org.freedesktop.systemd1.Activator"
+                                    )),
+                                    max_fds: Some(128),
+                                    min_fds: Some(12),
+                                    path: Some(String::from("/org/freedesktop")),
+                                    r#type: Some(MessageType::Signal),
                                 })
                             ),
                             (
                                 Access::Allow,
                                 Operation::Receive(ReceiveOperation {
-                                    error: String::from("something bad"),
-                                    interface: String::from("org.freedesktop.systemd1.Activator"),
-                                    max_fds: 128,
-                                    min_fds: 12,
-                                    path: String::from("/org/freedesktop"),
-                                    sender: String::from("org.freedesktop.DBus"),
-                                    r#type: MessageType::Signal
+                                    error: Some(String::from("something bad")),
+                                    interface: Some(String::from(
+                                        "org.freedesktop.systemd1.Activator"
+                                    )),
+                                    max_fds: Some(128),
+                                    min_fds: Some(12),
+                                    path: Some(String::from("/org/freedesktop")),
+                                    sender: Some(String::from("org.freedesktop.DBus")),
+                                    r#type: Some(MessageType::Signal),
                                 })
                             )
                         ],
@@ -878,7 +855,7 @@ mod tests {
                             (
                                 Access::Allow,
                                 Operation::Receive(ReceiveOperation {
-                                    sender: String::from("org.freedesktop.Avahi"),
+                                    sender: Some(String::from("org.freedesktop.Avahi")),
                                     ..Default::default()
                                 })
                             ),
@@ -948,7 +925,7 @@ mod tests {
                                 destination: Some(Destination::Name(String::from(
                                     "org.gnome.DisplayManager"
                                 ))),
-                                interface: String::from("org.gnome.DisplayManager.Manager"),
+                                interface: Some(String::from("org.gnome.DisplayManager.Manager")),
                                 // `member=... is dropped`
                                 ..Default::default()
                             }),