diff --git a/src/cmd/go/internal/envcmd/env.go b/src/cmd/go/internal/envcmd/env.go
index 6be3872012..426427cd76 100644
--- a/src/cmd/go/internal/envcmd/env.go
+++ b/src/cmd/go/internal/envcmd/env.go
@@ -250,7 +250,7 @@ func ExtraEnvVarsCostly() []cfg.EnvVar {
 			ev.Changed = ev.Value != ""
 		case "PKG_CONFIG":
 			ev.Changed = ev.Value != cfg.DefaultPkgConfig
-		case "CGO_CXXFLAGS", "CGO_CFLAGS", "CGO_FFLAGS", "GGO_LDFLAGS":
+		case "CGO_CXXFLAGS", "CGO_CFLAGS", "CGO_FFLAGS", "CGO_LDFLAGS":
 			ev.Changed = ev.Value != work.DefaultCFlags
 		}
 	}