diff --git a/internal/lsp/source/types_format.go b/internal/lsp/source/types_format.go
index c3f17b0f30..734764851a 100644
--- a/internal/lsp/source/types_format.go
+++ b/internal/lsp/source/types_format.go
@@ -18,6 +18,7 @@ import (
 	"golang.org/x/tools/internal/event"
 	"golang.org/x/tools/internal/lsp/debug/tag"
 	"golang.org/x/tools/internal/lsp/protocol"
+	"golang.org/x/tools/internal/typeparams"
 )
 
 // FormatType returns the detail and kind for a types.Type.
@@ -229,6 +230,14 @@ func FormatVarType(ctx context.Context, snapshot Snapshot, srcpkg Package, obj *
 		return types.TypeString(obj.Type(), qf)
 	}
 
+	// If the given expr refers to a type parameter, then use the
+	// object's Type instead of the type parameter declaration. This helps
+	// format the instantiated type as opposed to the original undeclared
+	// generic type.
+	if typeparams.IsTypeParam(pkg.GetTypesInfo().Types[expr].Type) {
+		return types.TypeString(obj.Type(), qf)
+	}
+
 	// The type names in the AST may not be correctly qualified.
 	// Determine the package name to use based on the package that originated
 	// the query and the package in which the type is declared.
diff --git a/internal/lsp/testdata/snippets/literal_snippets118.go.in b/internal/lsp/testdata/snippets/literal_snippets118.go.in
new file mode 100644
index 0000000000..8251a6384a
--- /dev/null
+++ b/internal/lsp/testdata/snippets/literal_snippets118.go.in
@@ -0,0 +1,14 @@
+// +build go1.18
+//go:build go1.18
+
+package snippets
+
+type Tree[T any] struct{}
+
+func (tree Tree[T]) Do(f func(s T)) {}
+
+func _() {
+    _ = "func(...) {}" //@item(litFunc, "func(...) {}", "", "var")
+	var t Tree[string]
+	t.Do(fun) //@complete(")", litFunc),snippet(")", litFunc, "func(s string) {$0\\}", "func(s string) {$0\\}")
+}
diff --git a/internal/lsp/testdata/summary_go1.18.txt.golden b/internal/lsp/testdata/summary_go1.18.txt.golden
index 61ca3b1418..a7afe2df66 100644
--- a/internal/lsp/testdata/summary_go1.18.txt.golden
+++ b/internal/lsp/testdata/summary_go1.18.txt.golden
@@ -1,8 +1,8 @@
 -- summary --
 CallHierarchyCount = 2
 CodeLensCount = 5
-CompletionsCount = 265
-CompletionSnippetCount = 103
+CompletionsCount = 266
+CompletionSnippetCount = 104
 UnimportedCompletionsCount = 5
 DeepCompletionsCount = 5
 FuzzyCompletionsCount = 8