diff --git a/czkawka_core/src/big_file.rs b/czkawka_core/src/big_file.rs
index 35300fb..6c9d23a 100644
--- a/czkawka_core/src/big_file.rs
+++ b/czkawka_core/src/big_file.rs
@@ -207,7 +207,13 @@ impl BigFile {
                             path: current_file_name.clone(),
                             size: metadata.len(),
                             modified_date: match metadata.modified() {
-                                Ok(t) => t.duration_since(UNIX_EPOCH).expect("Invalid file date").as_secs(),
+                                Ok(t) => match t.duration_since(UNIX_EPOCH) {
+                                    Ok(d) => d.as_secs(),
+                                    Err(_) => {
+                                        self.text_messages.warnings.push(format!("File {} seems to be modified before Unix Epoch.", current_file_name));
+                                        0
+                                    }
+                                },
                                 Err(_) => {
                                     self.text_messages.warnings.push("Unable to get modification date from file ".to_string() + current_file_name.as_str());
                                     continue;
diff --git a/czkawka_core/src/duplicate.rs b/czkawka_core/src/duplicate.rs
index 7a46244..b2eba7a 100644
--- a/czkawka_core/src/duplicate.rs
+++ b/czkawka_core/src/duplicate.rs
@@ -286,7 +286,13 @@ impl DuplicateFinder {
                             path: current_file_name.clone(),
                             size: metadata.len(),
                             modified_date: match metadata.modified() {
-                                Ok(t) => t.duration_since(UNIX_EPOCH).expect("Invalid file date").as_secs(),
+                                Ok(t) => match t.duration_since(UNIX_EPOCH) {
+                                    Ok(d) => d.as_secs(),
+                                    Err(_) => {
+                                        self.text_messages.warnings.push(format!("File {} seems to be modified before Unix Epoch.", current_file_name));
+                                        0
+                                    }
+                                },
                                 Err(_) => {
                                     self.text_messages.warnings.push("Unable to get modification date from file ".to_string() + current_file_name.as_str());
                                     continue;
diff --git a/czkawka_core/src/empty_files.rs b/czkawka_core/src/empty_files.rs
index f081d29..0504014 100644
--- a/czkawka_core/src/empty_files.rs
+++ b/czkawka_core/src/empty_files.rs
@@ -232,7 +232,13 @@ impl EmptyFiles {
                         let fe: FileEntry = FileEntry {
                             path: current_file_name.clone(),
                             modified_date: match metadata.modified() {
-                                Ok(t) => t.duration_since(UNIX_EPOCH).expect("Invalid file date").as_secs(),
+                                Ok(t) => match t.duration_since(UNIX_EPOCH) {
+                                    Ok(d) => d.as_secs(),
+                                    Err(_) => {
+                                        self.text_messages.warnings.push(format!("File {} seems to be modified before Unix Epoch.", current_file_name));
+                                        0
+                                    }
+                                },
                                 Err(_) => {
                                     self.text_messages.warnings.push("Unable to get modification date from file ".to_string() + current_file_name.as_str());
                                     continue;
diff --git a/czkawka_core/src/empty_folder.rs b/czkawka_core/src/empty_folder.rs
index e5d21e4..3e33695 100644
--- a/czkawka_core/src/empty_folder.rs
+++ b/czkawka_core/src/empty_folder.rs
@@ -182,7 +182,13 @@ impl EmptyFolder {
                             parent_path: Option::from(current_folder.clone()),
                             is_empty: FolderEmptiness::Maybe,
                             modified_date: match metadata.modified() {
-                                Ok(t) => t.duration_since(UNIX_EPOCH).expect("Invalid file date").as_secs(),
+                                Ok(t) => match t.duration_since(UNIX_EPOCH) {
+                                    Ok(d) => d.as_secs(),
+                                    Err(_) => {
+                                        self.text_messages.warnings.push(format!("Folder {} seems to be modified before Unix Epoch.", current_folder));
+                                        0
+                                    }
+                                },
                                 Err(_) => {
                                     self.text_messages.warnings.push(format!("Failed to read modification date of folder {}", current_folder));
                                     continue;
diff --git a/czkawka_core/src/temporary.rs b/czkawka_core/src/temporary.rs
index db14ba5..845a5c3 100644
--- a/czkawka_core/src/temporary.rs
+++ b/czkawka_core/src/temporary.rs
@@ -222,7 +222,13 @@ impl Temporary {
                         let fe: FileEntry = FileEntry {
                             path: current_file_name.clone(),
                             modified_date: match metadata.modified() {
-                                Ok(t) => t.duration_since(UNIX_EPOCH).expect("Invalid file date").as_secs(),
+                                Ok(t) => match t.duration_since(UNIX_EPOCH) {
+                                    Ok(d) => d.as_secs(),
+                                    Err(_) => {
+                                        self.text_messages.warnings.push(format!("File {} seems to be modified before Unix Epoch.", current_file_name));
+                                        0
+                                    }
+                                },
                                 Err(_) => {
                                     self.text_messages.warnings.push("Unable to get modification date from file ".to_string() + current_file_name.as_str());
                                     continue;