diff --git a/app/src/main/java/fr/free/nrw/commons/upload/UploadMediaDetailInputFilter.java b/app/src/main/java/fr/free/nrw/commons/upload/UploadMediaDetailInputFilter.java
deleted file mode 100644
index f2c444ee7..000000000
--- a/app/src/main/java/fr/free/nrw/commons/upload/UploadMediaDetailInputFilter.java
+++ /dev/null
@@ -1,81 +0,0 @@
-package fr.free.nrw.commons.upload;
-
-import android.text.InputFilter;
-import android.text.Spanned;
-import java.util.regex.Pattern;
-
-/**
- * An {@link InputFilter} class that removes characters blocklisted in Wikimedia titles. The list
- * of blocklisted characters is linked below.
- * @see <a href="https://commons.wikimedia.org/wiki/MediaWiki:Titleblacklist"></a>wikimedia.org</a>
- */
-public class UploadMediaDetailInputFilter implements InputFilter {
-    private final Pattern[] patterns;
-
-    /**
-     * Initializes the blocklisted patterns.
-     */
-    public UploadMediaDetailInputFilter() {
-        patterns = new Pattern[]{
-            Pattern.compile("[\\x{00A0}\\x{1680}\\x{180E}\\x{2000}-\\x{200B}\\x{2028}\\x{2029}\\x{202F}\\x{205F}]"),
-            Pattern.compile("[\\x{202A}-\\x{202E}]"),
-            Pattern.compile("\\p{Cc}"),
-            Pattern.compile("\\x{3A}"), // Added for colon(:)
-            Pattern.compile("\\x{FEFF}"),
-            Pattern.compile("\\x{00AD}"),
-            Pattern.compile("[\\x{E000}-\\x{F8FF}\\x{FFF0}-\\x{FFFF}]"),
-            Pattern.compile("[^\\x{0000}-\\x{FFFF}\\p{sc=Han}]")
-        };
-    }
-
-    /**
-     * Checks if the source text contains any blocklisted characters.
-     * @param source input text
-     * @return contains a blocklisted character
-     */
-    private Boolean checkBlocklisted(final CharSequence source) {
-        for (final Pattern pattern: patterns) {
-            if (pattern.matcher(source).find()) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Removes any blocklisted characters from the source text.
-     * @param source input text
-     * @return a cleaned character sequence
-     */
-    private CharSequence removeBlocklisted(CharSequence source) {
-        for (final Pattern pattern: patterns) {
-            source = pattern.matcher(source).replaceAll("");
-        }
-
-        return source;
-    }
-
-    /**
-     * Filters out any blocklisted characters.
-     * @param source {@inheritDoc}
-     * @param start {@inheritDoc}
-     * @param end {@inheritDoc}
-     * @param dest {@inheritDoc}
-     * @param dstart {@inheritDoc}
-     * @param dend {@inheritDoc}
-     * @return {@inheritDoc}
-     */
-    @Override
-    public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart,
-        int dend) {
-        if (checkBlocklisted(source)) {
-            if (start == dstart && dest.length() > 0) {
-                return dest;
-            }
-
-            return removeBlocklisted(source);
-        }
-        return null;
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/java/fr/free/nrw/commons/upload/UploadMediaDetailInputFilter.kt b/app/src/main/java/fr/free/nrw/commons/upload/UploadMediaDetailInputFilter.kt
new file mode 100644
index 000000000..d4baf21c8
--- /dev/null
+++ b/app/src/main/java/fr/free/nrw/commons/upload/UploadMediaDetailInputFilter.kt
@@ -0,0 +1,69 @@
+package fr.free.nrw.commons.upload
+
+import android.text.InputFilter
+import android.text.Spanned
+import java.util.regex.Pattern
+
+/**
+ * An [InputFilter] class that removes characters blocklisted in Wikimedia titles. The list
+ * of blocklisted characters is linked below.
+ * @see [](https://commons.wikimedia.org/wiki/MediaWiki:Titleblacklist)wikimedia.org
+ */
+class UploadMediaDetailInputFilter : InputFilter {
+    private val patterns = listOf(
+        Pattern.compile("[\\x{00A0}\\x{1680}\\x{180E}\\x{2000}-\\x{200B}\\x{2028}\\x{2029}\\x{202F}\\x{205F}]"),
+        Pattern.compile("[\\x{202A}-\\x{202E}]"),
+        Pattern.compile("\\p{Cc}"),
+        Pattern.compile("\\x{3A}"),  // Added for colon(:)
+        Pattern.compile("\\x{FEFF}"),
+        Pattern.compile("\\x{00AD}"),
+        Pattern.compile("[\\x{E000}-\\x{F8FF}\\x{FFF0}-\\x{FFFF}]"),
+        Pattern.compile("[^\\x{0000}-\\x{FFFF}\\p{sc=Han}]")
+    )
+
+    /**
+     * Checks if the source text contains any blocklisted characters.
+     * @param source input text
+     * @return contains a blocklisted character
+     */
+    private fun checkBlocklisted(source: CharSequence): Boolean =
+        patterns.any { it.matcher(source).find() }
+
+    /**
+     * Removes any blocklisted characters from the source text.
+     * @param source input text
+     * @return a cleaned character sequence
+     */
+    private fun removeBlocklisted(input: CharSequence): CharSequence {
+        var source = input
+        patterns.forEach {
+            source = it.matcher(source).replaceAll("")
+        }
+
+        return source
+    }
+
+    /**
+     * Filters out any blocklisted characters.
+     * @param source {@inheritDoc}
+     * @param start {@inheritDoc}
+     * @param end {@inheritDoc}
+     * @param dest {@inheritDoc}
+     * @param dstart {@inheritDoc}
+     * @param dend {@inheritDoc}
+     * @return {@inheritDoc}
+     */
+    override fun filter(
+        source: CharSequence, start: Int, end: Int, dest: Spanned, dstart: Int,
+        dend: Int
+    ): CharSequence? {
+        if (checkBlocklisted(source)) {
+            if (start == dstart && dest.isNotEmpty()) {
+                return dest
+            }
+
+            return removeBlocklisted(source)
+        }
+        return null
+    }
+}
\ No newline at end of file