diff --git a/cli_args.go b/cli_args.go
index 1c9400c..7cc4090 100644
--- a/cli_args.go
+++ b/cli_args.go
@@ -116,12 +116,12 @@ func parseCliOpts() (args argContainer) {
 		"Setting this to a lower value speeds up mounting but makes the password susceptible to brute-force attacks")
 	// Ignored otions
 	var dummyBool bool
-	ignoreText := "(ignored for compatability)"
+	ignoreText := "(ignored for compatibility)"
 	flagSet.BoolVar(&dummyBool, "rw", false, ignoreText)
 	flagSet.BoolVar(&dummyBool, "nosuid", false, ignoreText)
 	flagSet.BoolVar(&dummyBool, "nodev", false, ignoreText)
 	var dummyString string
-	flagSet.StringVar(&dummyString, "o", "", "For compatability, all options can be also passed as a comma-separated list to -o.")
+	flagSet.StringVar(&dummyString, "o", "", "For compatibility, all options can be also passed as a comma-separated list to -o.")
 	// Actual parsing
 	err = flagSet.Parse(os.Args[1:])
 	if err == flag.ErrHelp {
diff --git a/internal/cryptocore/cryptocore_test.go b/internal/cryptocore/cryptocore_test.go
index 9da6059..c54eac9 100644
--- a/internal/cryptocore/cryptocore_test.go
+++ b/internal/cryptocore/cryptocore_test.go
@@ -16,7 +16,7 @@ func TestCryptoCoreNew(t *testing.T) {
 	if c.IVLen != 12 {
 		t.Fail()
 	}
-	// "New(key, BackendGoGCM, 128)" is tested for Go 1.4 and 1.5+ seperately
+	// "New(key, BackendGoGCM, 128)" is tested for Go 1.4 and 1.5+ separately
 }
 
 // "New" should panic on any key not 32 bytes long
diff --git a/internal/fusefrontend/file.go b/internal/fusefrontend/file.go
index e021962..35c898d 100644
--- a/internal/fusefrontend/file.go
+++ b/internal/fusefrontend/file.go
@@ -212,7 +212,7 @@ func (f *file) Read(buf []byte, off int64) (resultData fuse.ReadResult, code fus
 // doWrite - encrypt "data" and write it to plaintext offset "off"
 //
 // Arguments do not have to be block-aligned, read-modify-write is
-// performed internally as neccessary
+// performed internally as necessary
 //
 // Called by Write() for normal writing,
 // and by Truncate() to rewrite the last file block.
diff --git a/internal/fusefrontend/file_allocate_truncate.go b/internal/fusefrontend/file_allocate_truncate.go
index 650e1db..bedbba3 100644
--- a/internal/fusefrontend/file_allocate_truncate.go
+++ b/internal/fusefrontend/file_allocate_truncate.go
@@ -175,7 +175,7 @@ func (f *file) statPlainSize() (uint64, error) {
 }
 
 // truncateGrowFile extends a file using seeking or ftruncate performing RMW on
-// the first and last block as neccessary. New blocks in the middle become
+// the first and last block as necessary. New blocks in the middle become
 // file holes unless they have been fallocate()'d beforehand.
 func (f *file) truncateGrowFile(oldPlainSz uint64, newPlainSz uint64) fuse.Status {
 	if newPlainSz <= oldPlainSz {
diff --git a/internal/fusefrontend_reverse/rpath.go b/internal/fusefrontend_reverse/rpath.go
index 5288dcd..c8df8fe 100644
--- a/internal/fusefrontend_reverse/rpath.go
+++ b/internal/fusefrontend_reverse/rpath.go
@@ -30,7 +30,7 @@ const (
 
 // derivePathIV derives an IV from an encrypted path by hashing it with sha256
 func derivePathIV(path string, purpose ivPurposeType) []byte {
-	// Use null byte as separator as it cannot occour in the path
+	// Use null byte as separator as it cannot occur in the path
 	extended := []byte(path + "\000" + string(purpose))
 	hash := sha256.Sum256(extended)
 	return hash[:nametransform.DirIVLen]
diff --git a/internal/nametransform/diriv.go b/internal/nametransform/diriv.go
index 0cc8dd3..30d4b87 100644
--- a/internal/nametransform/diriv.go
+++ b/internal/nametransform/diriv.go
@@ -49,7 +49,7 @@ func ReadDirIVAt(dirfd *os.File) (iv []byte, err error) {
 // fdReadDirIV reads and verifies the DirIV from an opened gocryptfs.diriv file.
 func fdReadDirIV(fd *os.File) (iv []byte, err error) {
 	// We want to detect if the file is bigger than DirIVLen, so
-	// make the buffer 1 byte bigger than neccessary.
+	// make the buffer 1 byte bigger than necessary.
 	iv = make([]byte, DirIVLen+1)
 	n, err := fd.Read(iv)
 	if err != nil {
diff --git a/sendusr1.go b/sendusr1.go
index 752a8db..0fdcd0e 100644
--- a/sendusr1.go
+++ b/sendusr1.go
@@ -8,7 +8,7 @@ import (
 )
 
 // Send signal USR1 to "pid" (usually our parent process). This notifies it
-// that the mounting has completed sucessfully.
+// that the mounting has completed successfully.
 func sendUsr1(pid int) {
 	p, err := os.FindProcess(pid)
 	if err != nil {
diff --git a/tests/plaintextnames/plaintextnames_test.go b/tests/plaintextnames/plaintextnames_test.go
index 3523c25..cda5149 100644
--- a/tests/plaintextnames/plaintextnames_test.go
+++ b/tests/plaintextnames/plaintextnames_test.go
@@ -32,7 +32,7 @@ func TestFlags(t *testing.T) {
 		t.Fatal(err)
 	}
 	if !cf.IsFeatureFlagSet(configfile.FlagPlaintextNames) {
-		t.Error("PlaintextNames flag should be set but isnt")
+		t.Error("PlaintextNames flag should be set but isn't")
 	}
 	if cf.IsFeatureFlagSet(configfile.FlagEMENames) || cf.IsFeatureFlagSet(configfile.FlagDirIV) {
 		t.Error("FlagEMENames and FlagDirIV should be not set")