diff --git a/src/cmd/compile/internal/noder/irgen.go b/src/cmd/compile/internal/noder/irgen.go
index 645ac2c..e912f79 100644
--- a/src/cmd/compile/internal/noder/irgen.go
+++ b/src/cmd/compile/internal/noder/irgen.go
@@ -115,7 +115,7 @@
 	itabConvs []ir.Node
 
 	// Mapping from each shape type that substitutes a type param, to its
-	// type bound (which is also substitued with shapes if it is parameterized)
+	// type bound (which is also substituted with shapes if it is parameterized)
 	shapeToBound map[*types.Type]*types.Type
 
 	// For type switches on nonempty interfaces, a map from OTYPE entries of
diff --git a/src/internal/fuzz/sys_posix.go b/src/internal/fuzz/sys_posix.go
index 2473274..ca6b145 100644
--- a/src/internal/fuzz/sys_posix.go
+++ b/src/internal/fuzz/sys_posix.go
@@ -48,7 +48,7 @@
 	return nil
 }
 
-// setWorkerComm configures communciation channels on the cmd that will
+// setWorkerComm configures communication channels on the cmd that will
 // run a worker process.
 func setWorkerComm(cmd *exec.Cmd, comm workerComm) {
 	mem := <-comm.memMu
diff --git a/src/internal/fuzz/sys_windows.go b/src/internal/fuzz/sys_windows.go
index fabf954..9c006b0 100644
--- a/src/internal/fuzz/sys_windows.go
+++ b/src/internal/fuzz/sys_windows.go
@@ -86,7 +86,7 @@
 	return nil
 }
 
-// setWorkerComm configures communciation channels on the cmd that will
+// setWorkerComm configures communication channels on the cmd that will
 // run a worker process.
 func setWorkerComm(cmd *exec.Cmd, comm workerComm) {
 	mem := <-comm.memMu