diff --git a/src/main/kotlin/insulator/lib/update/VersionChecker.kt b/src/main/kotlin/insulator/lib/update/VersionChecker.kt
index 9f353f70..dcdf1c1e 100644
--- a/src/main/kotlin/insulator/lib/update/VersionChecker.kt
+++ b/src/main/kotlin/insulator/lib/update/VersionChecker.kt
@@ -37,7 +37,8 @@ class VersionChecker(private val customJarPath: String? = null) {
     }
 
     fun getAppVersion(): Either<Throwable, String> {
-        val jarFolder = Paths.get(URLDecoder.decode(jarPath, "UTF-8")).parent.toAbsolutePath().toString()
+        val jarFolder = Paths.get(URLDecoder.decode(jarPath, "UTF-8")).parent?.toAbsolutePath()?.toString()
+            ?: return FileNotFoundException().left()
         val configPath = Paths.get(jarFolder, CONFIG_FILE_NAME).toAbsolutePath().toString()
         return if (File(configPath).exists())
             Properties()
diff --git a/src/test/kotlin/insulator/lib/update/VersionCheckerTest.kt b/src/test/kotlin/insulator/lib/update/VersionCheckerTest.kt
index 1fce7939..ad402f7e 100644
--- a/src/test/kotlin/insulator/lib/update/VersionCheckerTest.kt
+++ b/src/test/kotlin/insulator/lib/update/VersionCheckerTest.kt
@@ -21,7 +21,6 @@ class VersionCheckerTest : FunSpec({
             it.mockCurrentAppVersion("0.0.8")
             val sampleMessage = Paths.get("src", "test", "resources", "githubResponseSample.json").toFile().readText()
             it.mockHttpResponse(200, sampleMessage)
-
             // act
             val version = sut.getCurrentVersion()
             // assert
@@ -37,10 +36,8 @@ class VersionCheckerTest : FunSpec({
             it.mockCurrentAppVersion(mockVersion)
             val sampleMessage = Paths.get("src", "test", "resources", "githubResponseSample.json").toFile().readText()
             it.mockHttpResponse(200, sampleMessage)
-
             // act
             val version = sut.getCurrentVersion()
-
             // assert
             version shouldBeRight Version(mockVersion, null)
         }
@@ -65,10 +62,8 @@ class VersionCheckerTest : FunSpec({
             val sut = VersionChecker()
             val sampleMessage = Paths.get("src", "test", "resources", "githubResponseSample.json").toFile().readText()
             it.mockHttpResponse(200, sampleMessage)
-
             // act
             val latestVersion = sut.getLatestVersion()
-
             // assert
             latestVersion shouldBeRight it.mockRelease
         }
@@ -79,10 +74,8 @@ class VersionCheckerTest : FunSpec({
             // arrange
             val sut = VersionChecker()
             it.mockHttpResponse(500, """Internal server error""")
-
             // act
             val latestVersion = sut.getLatestVersion()
-
             // assert
             latestVersion shouldBeLeft {}
         }
@@ -93,10 +86,8 @@ class VersionCheckerTest : FunSpec({
             // arrange
             val sut = VersionChecker()
             it.mockHttpResponse(200, """Invalid json here""")
-
             // act
             val latestVersion = sut.getLatestVersion()
-
             // assert
             latestVersion shouldBeLeft {}
         }
@@ -107,10 +98,8 @@ class VersionCheckerTest : FunSpec({
             // arrange
             val sut = VersionChecker()
             it.mockHttpResponse(200, """{"error": "Json response changed"}""")
-
             // act
             val latestVersion = sut.getLatestVersion()
-
             // assert
             latestVersion shouldBeLeft {}
         }
@@ -124,10 +113,8 @@ class VersionCheckerTest : FunSpec({
                 createNewFile()
                 writeText("invalid string in the config file")
             }
-
             // act
             val latestVersion = sut.getAppVersion()
-
             // assert
             latestVersion shouldBeLeft {}
         }
@@ -136,11 +123,9 @@ class VersionCheckerTest : FunSpec({
     test("get app version with a missing config file return left") {
         VersionCheckerTestFixture().use {
             // arrange
-            val sut = VersionChecker(it.mockInsulatorConfigPath.toString())
-
+            val sut = VersionChecker("random_path")
             // act
             val latestVersion = sut.getAppVersion()
-
             // assert
             latestVersion shouldBeLeft {}
         }