diff --git a/internal/lsp/command.go b/internal/lsp/command.go
index 328ba92dda..398b2a5c80 100644
--- a/internal/lsp/command.go
+++ b/internal/lsp/command.go
@@ -201,10 +201,10 @@ func (s *Server) runCommand(ctx context.Context, work *workDone, command *source
 		}
 		pkgDir := span.URIFromPath(filepath.Dir(fileURI.Filename()))
 		s.gcOptimizationDetailsMu.Lock()
-		if _, ok := s.gcOptimizatonDetails[pkgDir]; ok {
-			delete(s.gcOptimizatonDetails, pkgDir)
+		if _, ok := s.gcOptimizationDetails[pkgDir]; ok {
+			delete(s.gcOptimizationDetails, pkgDir)
 		} else {
-			s.gcOptimizatonDetails[pkgDir] = struct{}{}
+			s.gcOptimizationDetails[pkgDir] = struct{}{}
 		}
 		s.gcOptimizationDetailsMu.Unlock()
 		// need to recompute diagnostics.
diff --git a/internal/lsp/diagnostics.go b/internal/lsp/diagnostics.go
index d0dcb27480..ca560d3c4b 100644
--- a/internal/lsp/diagnostics.go
+++ b/internal/lsp/diagnostics.go
@@ -224,7 +224,7 @@ If you believe this is a mistake, please file an issue: https://github.com/golan
 				if gcDetailsDir == "" {
 					dirURI := span.URIFromPath(filepath.Dir(pgf.URI.Filename()))
 					s.gcOptimizationDetailsMu.Lock()
-					_, ok := s.gcOptimizatonDetails[dirURI]
+					_, ok := s.gcOptimizationDetails[dirURI]
 					s.gcOptimizationDetailsMu.Unlock()
 					if ok {
 						gcDetailsDir = dirURI
diff --git a/internal/lsp/server.go b/internal/lsp/server.go
index dceb2a7b29..763f4d176d 100644
--- a/internal/lsp/server.go
+++ b/internal/lsp/server.go
@@ -23,15 +23,15 @@ const concurrentAnalyses = 1
 // messages on on the supplied stream.
 func NewServer(session source.Session, client protocol.Client) *Server {
 	return &Server{
-		delivered:            make(map[span.URI]sentDiagnostics),
-		gcOptimizatonDetails: make(map[span.URI]struct{}),
-		watchedDirectories:   make(map[span.URI]struct{}),
-		changedFiles:         make(map[span.URI]struct{}),
-		session:              session,
-		client:               client,
-		diagnosticsSema:      make(chan struct{}, concurrentAnalyses),
-		progress:             newProgressTracker(client),
-		debouncer:            newDebouncer(),
+		delivered:             make(map[span.URI]sentDiagnostics),
+		gcOptimizationDetails: make(map[span.URI]struct{}),
+		watchedDirectories:    make(map[span.URI]struct{}),
+		changedFiles:          make(map[span.URI]struct{}),
+		session:               session,
+		client:                client,
+		diagnosticsSema:       make(chan struct{}, concurrentAnalyses),
+		progress:              newProgressTracker(client),
+		debouncer:             newDebouncer(),
 	}
 }
 
@@ -93,7 +93,7 @@ type Server struct {
 	// optimization details to be included in the diagnostics. The key is the
 	// directory of the package.
 	gcOptimizationDetailsMu sync.Mutex
-	gcOptimizatonDetails    map[span.URI]struct{}
+	gcOptimizationDetails   map[span.URI]struct{}
 
 	// diagnosticsSema limits the concurrency of diagnostics runs, which can be expensive.
 	diagnosticsSema chan struct{}