diff --git a/src/input/readers/ascii/Ascii.h b/src/input/readers/ascii/Ascii.h
index db98a5a188..019e215c4f 100644
--- a/src/input/readers/ascii/Ascii.h
+++ b/src/input/readers/ascii/Ascii.h
@@ -33,7 +33,7 @@ struct FieldMapping {
 /**
  * Reader for structured ASCII files.
  */
-class Ascii final : public ReaderBackend {
+class Ascii : public ReaderBackend {
 public:
 	explicit Ascii(ReaderFrontend* frontend);
 	~Ascii() override;
diff --git a/src/input/readers/benchmark/Benchmark.h b/src/input/readers/benchmark/Benchmark.h
index ca3f14ffee..944c85d06e 100644
--- a/src/input/readers/benchmark/Benchmark.h
+++ b/src/input/readers/benchmark/Benchmark.h
@@ -10,7 +10,7 @@ namespace input { namespace reader {
 /**
  * A benchmark reader to measure performance of the input framework.
  */
-class Benchmark final : public ReaderBackend {
+class Benchmark : public ReaderBackend {
 public:
 	explicit Benchmark(ReaderFrontend* frontend);
 	~Benchmark() override;
diff --git a/src/input/readers/binary/Binary.h b/src/input/readers/binary/Binary.h
index ff2cd30adb..13a3d586cc 100644
--- a/src/input/readers/binary/Binary.h
+++ b/src/input/readers/binary/Binary.h
@@ -12,7 +12,7 @@ namespace input { namespace reader {
 /**
  * Binary mode file reader.
  */
-class Binary final : public ReaderBackend {
+class Binary : public ReaderBackend {
 public:
 	explicit Binary(ReaderFrontend* frontend);
 	~Binary() override;
diff --git a/src/input/readers/config/Config.h b/src/input/readers/config/Config.h
index 599b3bb737..fde24e29d9 100644
--- a/src/input/readers/config/Config.h
+++ b/src/input/readers/config/Config.h
@@ -17,7 +17,7 @@ namespace input { namespace reader {
 /**
  * Reader for Configuration files.
  */
-class Config final : public ReaderBackend {
+class Config : public ReaderBackend {
 public:
 	explicit Config(ReaderFrontend* frontend);
 	~Config() override;
diff --git a/src/input/readers/raw/Raw.h b/src/input/readers/raw/Raw.h
index 7ab1ab35d4..e5b9c9bdc6 100644
--- a/src/input/readers/raw/Raw.h
+++ b/src/input/readers/raw/Raw.h
@@ -15,7 +15,7 @@ namespace input { namespace reader {
  * A reader that returns a file (or the output of a command) as a single
  * blob.
  */
-class Raw final : public ReaderBackend {
+class Raw : public ReaderBackend {
 public:
 	explicit Raw(ReaderFrontend* frontend);
 	~Raw() override;
diff --git a/src/input/readers/sqlite/SQLite.h b/src/input/readers/sqlite/SQLite.h
index 6c7e9c328c..b85af944db 100644
--- a/src/input/readers/sqlite/SQLite.h
+++ b/src/input/readers/sqlite/SQLite.h
@@ -13,7 +13,7 @@
 
 namespace input { namespace reader {
 
-class SQLite final : public ReaderBackend {
+class SQLite : public ReaderBackend {
 public:
 	explicit SQLite(ReaderFrontend* frontend);
 	~SQLite() override;
diff --git a/src/iosource/pcap/Source.h b/src/iosource/pcap/Source.h
index a04891934d..f32071cb99 100644
--- a/src/iosource/pcap/Source.h
+++ b/src/iosource/pcap/Source.h
@@ -13,7 +13,7 @@ extern "C" {
 namespace iosource {
 namespace pcap {
 
-class PcapSource final : public iosource::PktSrc {
+class PcapSource : public iosource::PktSrc {
 public:
 	PcapSource(const std::string& path, bool is_live);
 	~PcapSource() override;
diff --git a/src/logging/writers/ascii/Ascii.h b/src/logging/writers/ascii/Ascii.h
index 6ec122723d..0fa073a158 100644
--- a/src/logging/writers/ascii/Ascii.h
+++ b/src/logging/writers/ascii/Ascii.h
@@ -12,7 +12,7 @@
 
 namespace logging { namespace writer {
 
-class Ascii final : public WriterBackend {
+class Ascii : public WriterBackend {
 public:
 	explicit Ascii(WriterFrontend* frontend);
 	~Ascii() override;
diff --git a/src/logging/writers/none/None.h b/src/logging/writers/none/None.h
index 5dddcd67b6..b00616f597 100644
--- a/src/logging/writers/none/None.h
+++ b/src/logging/writers/none/None.h
@@ -8,7 +8,7 @@
 
 namespace logging { namespace writer {
 
-class None final : public WriterBackend {
+class None : public WriterBackend {
 public:
 	explicit None(WriterFrontend* frontend) : WriterBackend(frontend)	{}
 	~None() override {};
diff --git a/src/logging/writers/sqlite/SQLite.h b/src/logging/writers/sqlite/SQLite.h
index e62bf38a55..87003f35cb 100644
--- a/src/logging/writers/sqlite/SQLite.h
+++ b/src/logging/writers/sqlite/SQLite.h
@@ -13,7 +13,7 @@
 
 namespace logging { namespace writer {
 
-class SQLite final : public WriterBackend {
+class SQLite : public WriterBackend {
 public:
 	explicit SQLite(WriterFrontend* frontend);
 	~SQLite() override;