diff --git a/.idea/dictionaries/develar.xml b/.idea/dictionaries/develar.xml
index e534df15401..5bfc91828c7 100644
--- a/.idea/dictionaries/develar.xml
+++ b/.idea/dictionaries/develar.xml
@@ -230,6 +230,7 @@
       <w>nomacver</w>
       <w>noninteractive</w>
       <w>noupdate</w>
+      <w>npmignore</w>
       <w>npmrc</w>
       <w>nsis</w>
       <w>nsisdir</w>
diff --git a/packages/electron-builder/src/fileMatcher.ts b/packages/electron-builder/src/fileMatcher.ts
index a4ed7c92e3a..2dc1ff48dad 100644
--- a/packages/electron-builder/src/fileMatcher.ts
+++ b/packages/electron-builder/src/fileMatcher.ts
@@ -4,8 +4,8 @@ import { copyDir, copyOrLinkFile, Filter, statOrNull } from "builder-util/out/fs
 import { mkdirs } from "fs-extra-p"
 import { Minimatch } from "minimatch"
 import * as path from "path"
-import { Configuration, FileSet, PlatformSpecificBuildOptions } from "./index"
 import { Platform } from "./core"
+import { Configuration, FileSet, PlatformSpecificBuildOptions } from "./index"
 import { PlatformPackager } from "./platformPackager"
 import { createFilter, hasMagic } from "./util/filter"
 
@@ -150,7 +150,7 @@ export function getMainFileMatchers(appDir: string, destination: string, macroEx
   }
 
   patterns.push("!**/node_modules/*/{README.md,karma.conf.js,.coveralls.yml,readme.markdown,README,readme.md,readme,test,__tests__,tests,powered-test,example,examples}")
-  patterns.push(`!**/*.{iml,hprof,orig,pyc,pyo,rbc,swp,csproj,sln,xproj,cc,pdb}`)
+  patterns.push(`!**/*.{iml,hprof,orig,pyc,pyo,rbc,swp,csproj,sln,suo,xproj,cc,pdb}`)
   patterns.push("!**/._*")
   patterns.push("!**/electron-builder.{yaml,yml,json,json5,toml}")
   //noinspection SpellCheckingInspection
diff --git a/packages/electron-builder/src/util/AppFileWalker.ts b/packages/electron-builder/src/util/AppFileWalker.ts
index 9cd6a2c23ae..32c978b5590 100644
--- a/packages/electron-builder/src/util/AppFileWalker.ts
+++ b/packages/electron-builder/src/util/AppFileWalker.ts
@@ -105,7 +105,7 @@ export class AppFileWalker implements FileConsumer {
         const dirs: Array<string> = []
         // our handler is async, but we should add sorted files, so, we add file to result not in the mapper, but after map
         const sortedFilePaths = await BluebirdPromise.map(childNames, name => {
-          if (excludedFiles.has(name) || name.endsWith(".h") || name.endsWith(".o") || name.endsWith(".obj") || name.endsWith(".cc") || name.endsWith(".pdb") || name.endsWith(".d.ts")) {
+          if (excludedFiles.has(name) || name.endsWith(".h") || name.endsWith(".o") || name.endsWith(".obj") || name.endsWith(".cc") || name.endsWith(".pdb") || name.endsWith(".d.ts") || name.endsWith(".suo") || name.endsWith(".npmignore") || name.endsWith(".sln")) {
             return null
           }