diff --git a/internal/lsp/source/completion.go b/internal/lsp/source/completion.go
index 43f5d797f48..4aff81bf0b4 100644
--- a/internal/lsp/source/completion.go
+++ b/internal/lsp/source/completion.go
@@ -1665,10 +1665,10 @@ func (c *completer) matchingCandidate(cand *candidate) bool {
 					// This doesn't take into account the constant value, so there will be some
 					// false positives due to integer sign and overflow.
 					if candBasic.Info()&types.IsConstType == wantBasic.Info()&types.IsConstType {
-						// Lower candidate score if the types are not identical.
-						// This avoids ranking untyped integer constants above
-						// candidates with an exact type match.
-						if !types.Identical(candType, expType) {
+						// Lower candidate score if the types are not identical. This avoids
+						// ranking untyped constants above candidates with an exact type
+						// match. Don't lower score of builtin constants (e.g. "true").
+						if !types.Identical(candType, expType) && cand.obj.Parent() != types.Universe {
 							cand.score /= 2
 						}
 						return true
diff --git a/internal/lsp/testdata/builtins/iota.go b/internal/lsp/testdata/builtins/constants.go
similarity index 59%
rename from internal/lsp/testdata/builtins/iota.go
rename to internal/lsp/testdata/builtins/constants.go
index 44427245965..7ad07bd1f3a 100644
--- a/internal/lsp/testdata/builtins/iota.go
+++ b/internal/lsp/testdata/builtins/constants.go
@@ -11,3 +11,9 @@ func _() {
 
 	iota //@complete(" //", iotaVar)
 }
+
+func _() {
+	var twoRedUpEnd bool //@item(TRUEVar, "twoRedUpEnd", "bool", "var")
+
+	var _ bool = true //@rank(" //", _true, TRUEVar)
+}
diff --git a/internal/lsp/testdata/summary.txt.golden b/internal/lsp/testdata/summary.txt.golden
index 33ac397edaf..25d58cebe2f 100644
--- a/internal/lsp/testdata/summary.txt.golden
+++ b/internal/lsp/testdata/summary.txt.golden
@@ -4,7 +4,7 @@ CompletionSnippetCount = 61
 UnimportedCompletionsCount = 4
 DeepCompletionsCount = 5
 FuzzyCompletionsCount = 8
-RankedCompletionsCount = 32
+RankedCompletionsCount = 33
 CaseSensitiveCompletionsCount = 4
 DiagnosticsCount = 35
 FoldingRangesCount = 2