diff --git a/source/net/filebot/cli/ScriptShellMethods.java b/source/net/filebot/cli/ScriptShellMethods.java
index a4c4de20..4b2985a4 100644
--- a/source/net/filebot/cli/ScriptShellMethods.java
+++ b/source/net/filebot/cli/ScriptShellMethods.java
@@ -432,4 +432,8 @@ public class ScriptShellMethods {
 		return MediaDetection.isMovie(self, true);
 	}
 
+	private ScriptShellMethods() {
+		throw new UnsupportedOperationException();
+	}
+
 }
diff --git a/source/net/filebot/format/ExpressionFormatFunctions.java b/source/net/filebot/format/ExpressionFormatFunctions.java
index 1595e1a6..75ac4148 100644
--- a/source/net/filebot/format/ExpressionFormatFunctions.java
+++ b/source/net/filebot/format/ExpressionFormatFunctions.java
@@ -101,4 +101,8 @@ public class ExpressionFormatFunctions {
 		return f;
 	}
 
+	private ExpressionFormatFunctions() {
+		throw new UnsupportedOperationException();
+	}
+
 }
diff --git a/source/net/filebot/format/ExpressionFormatMethods.java b/source/net/filebot/format/ExpressionFormatMethods.java
index 6acd199c..11484fa0 100644
--- a/source/net/filebot/format/ExpressionFormatMethods.java
+++ b/source/net/filebot/format/ExpressionFormatMethods.java
@@ -569,4 +569,8 @@ public class ExpressionFormatMethods {
 		return null;
 	}
 
+	private ExpressionFormatMethods() {
+		throw new UnsupportedOperationException();
+	}
+
 }
diff --git a/source/net/filebot/mac/MacAppUtilities.java b/source/net/filebot/mac/MacAppUtilities.java
index 02483073..4c750cc3 100644
--- a/source/net/filebot/mac/MacAppUtilities.java
+++ b/source/net/filebot/mac/MacAppUtilities.java
@@ -174,4 +174,8 @@ public class MacAppUtilities {
 		return DropToUnlock.showUnlockFoldersDialog(owner, files);
 	}
 
+	private MacAppUtilities() {
+		throw new UnsupportedOperationException();
+	}
+
 }
diff --git a/source/net/filebot/subtitle/SubtitleUtilities.java b/source/net/filebot/subtitle/SubtitleUtilities.java
index c3a2d91d..0461cdac 100644
--- a/source/net/filebot/subtitle/SubtitleUtilities.java
+++ b/source/net/filebot/subtitle/SubtitleUtilities.java
@@ -476,9 +476,6 @@ public final class SubtitleUtilities {
 		return languageDetector.build();
 	}
 
-	/**
-	 * Dummy constructor to prevent instantiation.
-	 */
 	private SubtitleUtilities() {
 		throw new UnsupportedOperationException();
 	}
diff --git a/source/net/filebot/util/StringUtilities.java b/source/net/filebot/util/StringUtilities.java
index a596b3c2..f6713242 100644
--- a/source/net/filebot/util/StringUtilities.java
+++ b/source/net/filebot/util/StringUtilities.java
@@ -148,4 +148,8 @@ public final class StringUtilities {
 
 	}
 
+	private StringUtilities() {
+		throw new UnsupportedOperationException();
+	}
+
 }
diff --git a/source/net/filebot/win/WinAppUtilities.java b/source/net/filebot/win/WinAppUtilities.java
index 529caad5..238465f6 100644
--- a/source/net/filebot/win/WinAppUtilities.java
+++ b/source/net/filebot/win/WinAppUtilities.java
@@ -31,4 +31,8 @@ public class WinAppUtilities {
 		return null;
 	}
 
+	private WinAppUtilities() {
+		throw new UnsupportedOperationException();
+	}
+
 }