diff --git a/.version b/.version
index 8e6de6518..0cbceb828 100644
--- a/.version
+++ b/.version
@@ -1 +1 @@
-0.2.738
\ No newline at end of file
+0.2.742
\ No newline at end of file
diff --git a/cmd/templ/lspcmd/proxy/server.go b/cmd/templ/lspcmd/proxy/server.go
index c3070d48a..e6f24b0ae 100644
--- a/cmd/templ/lspcmd/proxy/server.go
+++ b/cmd/templ/lspcmd/proxy/server.go
@@ -393,6 +393,16 @@ func (p *Server) Completion(ctx context.Context, params *lsp.CompletionParams) (
 	if !ok {
 		return nil, nil
 	}
+
+	// Ensure that Go source is available.
+	gosrc := strings.Split(p.GoSource[string(templURI)], "\n")
+	if len(gosrc)-1 < int(params.TextDocumentPositionParams.Position.Line) {
+		return nil, nil
+	}
+	if len(gosrc[params.TextDocumentPositionParams.Position.Line])-1 < int(params.TextDocumentPositionParams.Position.Character) {
+		return nil, nil
+	}
+
 	// Call the target.
 	result, err = p.Target.Completion(ctx, params)
 	if err != nil {