diff --git a/src/server/scriptInfo.ts b/src/server/scriptInfo.ts
index 68dd59d2d32..2792b3e47a9 100644
--- a/src/server/scriptInfo.ts
+++ b/src/server/scriptInfo.ts
@@ -84,11 +84,7 @@ namespace ts.server {
         }
 
         getDefaultProject() {
-            if (this.containingProjects.length === 0) {
-                return Errors.ThrowNoProject();
-            }
-            Debug.assert(this.containingProjects.length !== 0);
-            return this.containingProjects[0];
+            return this.containingProjects.length === 0 ? Errors.ThrowNoProject() : this.containingProjects[0];
         }
 
         setFormatOptions(formatSettings: FormatCodeSettings): void {