diff --git a/src/cmd/compile/internal/gc/go.go b/src/cmd/compile/internal/gc/go.go
index 2fbdf71055..ee2add3733 100644
--- a/src/cmd/compile/internal/gc/go.go
+++ b/src/cmd/compile/internal/gc/go.go
@@ -61,12 +61,12 @@ type Class uint8
 //go:generate stringer -type=Class
 const (
 	Pxxx      Class = iota // no class; used during ssa conversion to indicate pseudo-variables
-	PEXTERN                // global variable
+	PEXTERN                // global variables
 	PAUTO                  // local variables
-	PAUTOHEAP              // local variable or parameter moved to heap
+	PAUTOHEAP              // local variables or parameters moved to heap
 	PPARAM                 // input arguments
 	PPARAMOUT              // output results
-	PFUNC                  // global function
+	PFUNC                  // global functions
 
 	// Careful: Class is stored in three bits in Node.flags.
 	_ = uint((1 << 3) - iota) // static assert for iota <= (1 << 3)