diff --git a/src/server/editorServices.ts b/src/server/editorServices.ts
index 5d1865c96a5..dbaeb4b45c9 100644
--- a/src/server/editorServices.ts
+++ b/src/server/editorServices.ts
@@ -301,7 +301,6 @@ namespace ts.server {
             let shouldRefreshInferredProjects = false;
             for (const p of projects) {
                 if (!p.updateGraph()) {
-                    this.typingsCache.invalidateCachedTypingsForProject(p);
                     shouldRefreshInferredProjects = true;
                 }
             }
diff --git a/src/server/project.ts b/src/server/project.ts
index a0792082f13..31546e2933b 100644
--- a/src/server/project.ts
+++ b/src/server/project.ts
@@ -312,6 +312,7 @@ namespace ts.server {
             // - newProgram is different from the old program and structure of the old program was not reused.
             if (!oldProgram || (this.program !== oldProgram && !oldProgram.structureIsReused)) {
                 hasChanges = true;
+                this.projectService.typingsCache.invalidateCachedTypingsForProject(this);
                 if (oldProgram) {
                     for (const f of oldProgram.getSourceFiles()) {
                         if (this.program.getSourceFileByPath(f.path)) {
@@ -414,9 +415,6 @@ namespace ts.server {
                         removed.push(id);
                     }
                 }
-                if (added.length > 0 || removed.length > 0) {
-                    this.projectService.typingsCache.invalidateCachedTypingsForProject(this);
-                }
                 this.lastReportedFileNames = currentFiles;
 
                 this.lastReportedFileNames = currentFiles;