diff --git a/src/internal/buildcfg/exp.go b/src/internal/buildcfg/exp.go
index 7c7cefba7b..8c8a16c571 100644
--- a/src/internal/buildcfg/exp.go
+++ b/src/internal/buildcfg/exp.go
@@ -71,6 +71,7 @@ func ParseGOEXPERIMENT(goos, goarch, goexp string) (*ExperimentFlags, error) {
 		RegabiWrappers:   regabiSupported,
 		RegabiArgs:       regabiSupported,
 		CoverageRedesign: true,
+		AliasTypeParams:  true,
 	}
 
 	// Start with the statically enabled set of experiments.
diff --git a/src/internal/goexperiment/flags.go b/src/internal/goexperiment/flags.go
index 33a24433cb..ae5d4ad81a 100644
--- a/src/internal/goexperiment/flags.go
+++ b/src/internal/goexperiment/flags.go
@@ -113,7 +113,7 @@ type Flags struct {
 
 	// AliasTypeParams enables type parameters for alias types.
 	// Requires that gotypesalias=1 is set with GODEBUG.
-	// This flag will be removed with Go 1.24.
+	// This flag will be removed with Go 1.25.
 	AliasTypeParams bool
 
 	// SwissMap enables the SwissTable-based map implementation.