diff --git a/src/networking/types/combobox_data_states.rs b/src/networking/types/combobox_data_states.rs
index 682be7ed..9bc4a227 100644
--- a/src/networking/types/combobox_data_states.rs
+++ b/src/networking/types/combobox_data_states.rs
@@ -4,6 +4,7 @@ use std::net::IpAddr;
 use crate::countries::types::country::Country;
 use crate::networking::types::host::Host;
 use crate::report::types::search_parameters::SearchParameters;
+use crate::utils::types::case_insensitive_string::CaseInsensitiveString;
 use iced::widget::combo_box;
 use listeners::Process;
 
@@ -23,7 +24,7 @@ impl ComboboxDataStates {
 
         if data.domains.1 {
             states.domains = combo_box::State::with_selection(
-                data.domains.0.iter().cloned().collect(),
+                data.domains.0.iter().map(|c| c.0.clone()).collect(),
                 Some(&search.domain),
             );
             data.domains.1 = false;
@@ -31,7 +32,7 @@ impl ComboboxDataStates {
 
         if data.asns.1 {
             states.asns = combo_box::State::with_selection(
-                data.asns.0.iter().cloned().collect(),
+                data.asns.0.iter().map(|c| c.0.clone()).collect(),
                 Some(&search.as_name),
             );
             data.asns.1 = false;
@@ -39,7 +40,7 @@ impl ComboboxDataStates {
 
         if data.countries.1 {
             states.countries = combo_box::State::with_selection(
-                data.countries.0.iter().cloned().collect(),
+                data.countries.0.iter().map(|c| c.0.clone()).collect(),
                 Some(&search.country),
             );
             data.countries.1 = false;
@@ -47,7 +48,7 @@ impl ComboboxDataStates {
 
         if data.programs.1 {
             states.programs = combo_box::State::with_selection(
-                data.programs.0.iter().cloned().collect(),
+                data.programs.0.iter().map(|c| c.0.clone()).collect(),
                 Some(&search.program),
             );
             data.programs.1 = false;
@@ -57,25 +58,36 @@ impl ComboboxDataStates {
 
 #[derive(Default)]
 pub struct ComboboxData {
-    pub domains: (BTreeSet<String>, bool),
-    pub asns: (BTreeSet<String>, bool),
-    pub countries: (BTreeSet<String>, bool),
-    pub programs: (BTreeSet<String>, bool),
+    pub domains: (BTreeSet<CaseInsensitiveString>, bool),
+    pub asns: (BTreeSet<CaseInsensitiveString>, bool),
+    pub countries: (BTreeSet<CaseInsensitiveString>, bool),
+    pub programs: (BTreeSet<CaseInsensitiveString>, bool),
 }
 
 impl ComboboxData {
     pub fn update_host(&mut self, host: &Host) {
         if !host.domain.is_empty() && host.domain.parse::<IpAddr>().is_err() {
-            self.domains.1 = self.domains.0.insert(host.domain.clone()) || self.domains.1;
+            self.domains.1 = self
+                .domains
+                .0
+                .insert(CaseInsensitiveString(host.domain.clone()))
+                || self.domains.1;
         }
 
         if !host.asn.name.is_empty() {
-            self.asns.1 = self.asns.0.insert(host.asn.name.clone()) || self.asns.1;
+            self.asns.1 = self
+                .asns
+                .0
+                .insert(CaseInsensitiveString(host.asn.name.clone()))
+                || self.asns.1;
         }
 
         if host.country != Country::ZZ {
-            self.countries.1 =
-                self.countries.0.insert(host.country.to_string()) || self.countries.1;
+            self.countries.1 = self
+                .countries
+                .0
+                .insert(CaseInsensitiveString(host.country.to_string()))
+                || self.countries.1;
         }
     }
 
@@ -83,7 +95,11 @@ impl ComboboxData {
         if let Some(program) = program
             && !program.name.is_empty()
         {
-            self.programs.1 = self.programs.0.insert(program.name.clone()) || self.programs.1;
+            self.programs.1 = self
+                .programs
+                .0
+                .insert(CaseInsensitiveString(program.name.clone()))
+                || self.programs.1;
         }
     }
 }
diff --git a/src/utils/types/case_insensitive_string.rs b/src/utils/types/case_insensitive_string.rs
new file mode 100644
index 00000000..b0e9b764
--- /dev/null
+++ b/src/utils/types/case_insensitive_string.rs
@@ -0,0 +1,24 @@
+#[derive(Clone)]
+/// A wrapper around String that compares case-insensitively.
+/// Used in comboboxes dropdown lists to sort them case-insensitively.
+pub struct CaseInsensitiveString(pub String);
+
+impl Ord for CaseInsensitiveString {
+    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+        self.0.to_lowercase().cmp(&other.0.to_lowercase())
+    }
+}
+
+impl PartialOrd for CaseInsensitiveString {
+    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl PartialEq for CaseInsensitiveString {
+    fn eq(&self, other: &Self) -> bool {
+        self.0.to_lowercase() == other.0.to_lowercase()
+    }
+}
+
+impl Eq for CaseInsensitiveString {}
diff --git a/src/utils/types/mod.rs b/src/utils/types/mod.rs
index 902ef8ee..5a14a200 100644
--- a/src/utils/types/mod.rs
+++ b/src/utils/types/mod.rs
@@ -1,3 +1,4 @@
+pub mod case_insensitive_string;
 pub mod file_info;
 pub mod icon;
 pub mod timestamp;