diff --git a/lib/fips140/Makefile b/lib/fips140/Makefile
index 8dcb8fbebe5..e8fc82e08ae 100644
--- a/lib/fips140/Makefile
+++ b/lib/fips140/Makefile
@@ -30,7 +30,7 @@ v%.zip:
 	go run ../../src/cmd/go/internal/fips140/mkzip.go v$*
 
 # normally mkzip refuses to overwrite an existing zip file.
-# make v1.2.3.rm removes the zip file and and unpacked
+# make v1.2.3.rm removes the zip file and unpacked
 # copy from the module cache.
 v%.rm:
 	rm -f v$*.zip
diff --git a/src/internal/coverage/test/counter_test.go b/src/internal/coverage/test/counter_test.go
index e29baeddc0e..f7f74dc9edd 100644
--- a/src/internal/coverage/test/counter_test.go
+++ b/src/internal/coverage/test/counter_test.go
@@ -141,7 +141,7 @@ func TestCounterDataAppendSegment(t *testing.T) {
 
 	const numSegments = 2
 
-	// Write a counter with with multiple segments.
+	// Write a counter with multiple segments.
 	args := map[string]string{"argc": "1", "argv0": "prog.exe"}
 	allfuncs := [][]decodecounter.FuncPayload{}
 	ctrs := []uint32{}
diff --git a/src/net/interface_plan9.go b/src/net/interface_plan9.go
index 21d2f950401..93c783b56ee 100644
--- a/src/net/interface_plan9.go
+++ b/src/net/interface_plan9.go
@@ -59,7 +59,7 @@ func readInterface(i int) (*Interface, error) {
 	fields := getFields(line)
 
 	// If the interface has no device file then we see two spaces between "device" and
-	// "maxtu" and and getFields treats the two spaces as one delimiter.
+	// "maxtu" and getFields treats the two spaces as one delimiter.
 	// Insert a gap for the missing device name.
 	// See https://go.dev/issue/72060.
 	if stringslite.HasPrefix(line, "device  maxtu ") {