diff --git a/archivefs/archivefs.go b/archivefs/archivefs.go
index cf824eb3..c902e938 100644
--- a/archivefs/archivefs.go
+++ b/archivefs/archivefs.go
@@ -12,6 +12,7 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+
 package archivefs
 
 import "io"
diff --git a/archivefs/archivefs_test.go b/archivefs/archivefs_test.go
index fed5fb44..41e0490a 100644
--- a/archivefs/archivefs_test.go
+++ b/archivefs/archivefs_test.go
@@ -12,6 +12,7 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+
 package archivefs_test
 
 import (
diff --git a/archivefs/extensions.go b/archivefs/extensions.go
index 42d83087..08111206 100644
--- a/archivefs/extensions.go
+++ b/archivefs/extensions.go
@@ -12,6 +12,7 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+
 package archivefs
 
 import (
diff --git a/archivefs/path.go b/archivefs/path.go
index d9920020..adb7411e 100644
--- a/archivefs/path.go
+++ b/archivefs/path.go
@@ -12,6 +12,7 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with Gopher2600.  If not, see <https://www.gnu.org/licenses/>.
+
 package archivefs
 
 import (
diff --git a/cartridgeloader/doc.go b/cartridgeloader/doc.go
index 3811ea8f..e168d740 100644
--- a/cartridgeloader/doc.go
+++ b/cartridgeloader/doc.go
@@ -24,29 +24,29 @@
 // The following file extensions are recognised and force the use of the
 // specified mapper:
 //
-//	Atari 2k		"2k"
-//	Atari 4k		"4k"
-//	Atari 8k		"F8"
-//	Atari 16k		"F6"
-//	Atari 32k		"F4"
-//	Atari 2k (RAM)	"2k+"
-//	Atari 4k (RAM)	"4k+"
-//	Atari 8k (RAM)	"F8+"
-//	Atari 16k (RAM)	"F6+"
-//	Atari 32k (RAM)	"F4+"
-//	CBS				"FA"
-//	Parker Bros		"E0"
-//	M-Network		"E7"
-//	Tigervision		"3F"
-//	Supercharger	"AR", "MP3, "WAV"
-//	DF				"DF"
-//	3E				"3E"
-//	3E+				"3E+"
-//	Superbank		"SB"
+//	Atari 2k        "2k"
+//	Atari 4k        "4k"
+//	Atari 8k        "F8"
+//	Atari 16k       "F6"
+//	Atari 32k       "F4"
+//	Atari 2k (RAM)  "2k+"
+//	Atari 4k (RAM)  "4k+"
+//	Atari 8k (RAM)  "F8+"
+//	Atari 16k (RAM) "F6+"
+//	Atari 32k (RAM) "F4+"
+//	CBS             "FA"
+//	Parker Bros     "E0"
+//	M-Network       "E7"
+//	Tigervision     "3F"
+//	Supercharger    "AR", "MP3, "WAV"
+//	DF              "DF"
+//	3E              "3E"
+//	3E+             "3E+"
+//	Superbank       "SB"
 //	DPC (Pitfall2)  "DPC"
-//	DPC+			"DP+"
-//	CDF				"CDF" (including CDFJ)
-//	MovieCart		"MVC"
+//	DPC+            "DP+"
+//	CDF             "CDF" (including CDFJ)
+//	MovieCart       "MVC"
 //
 // File extensions are case insensitive.
 //