diff --git a/src/main/kotlin/net/leanix/githubagent/services/GitHubScanningService.kt b/src/main/kotlin/net/leanix/githubagent/services/GitHubScanningService.kt
index 6223704..ab6402f 100644
--- a/src/main/kotlin/net/leanix/githubagent/services/GitHubScanningService.kt
+++ b/src/main/kotlin/net/leanix/githubagent/services/GitHubScanningService.kt
@@ -2,6 +2,7 @@ package net.leanix.githubagent.services
 
 import net.leanix.githubagent.client.GitHubClient
 import net.leanix.githubagent.dto.Installation
+import net.leanix.githubagent.dto.Organization
 import net.leanix.githubagent.dto.OrganizationDto
 import net.leanix.githubagent.exceptions.JwtTokenNotFound
 import org.slf4j.LoggerFactory
@@ -45,6 +46,11 @@ class GitHubScanningService(
     private fun fetchAndSendOrganisationsData(
         installations: List<Installation>
     ) {
+        if (installations.isEmpty()) {
+            logger.warn("No installations found, please install the GitHub App on an organization")
+            webSocketService.sendMessage("${cachingService.get("runId")}/organizations", emptyList<Organization>())
+            return
+        }
         val installationToken = cachingService.get("installationToken:${installations.first().id}")
         val organizations = gitHubClient.getOrganizations("Bearer $installationToken")
             .map { organization ->
diff --git a/src/test/kotlin/net/leanix/githubagent/services/GitHubScanningServiceTest.kt b/src/test/kotlin/net/leanix/githubagent/services/GitHubScanningServiceTest.kt
index e9134ed..6253db6 100644
--- a/src/test/kotlin/net/leanix/githubagent/services/GitHubScanningServiceTest.kt
+++ b/src/test/kotlin/net/leanix/githubagent/services/GitHubScanningServiceTest.kt
@@ -59,6 +59,18 @@ class GitHubScanningServiceTest {
         verify { webSocketService.sendMessage(eq("$runId/organizations"), any()) }
     }
 
+    @Test
+    fun `scanGitHubResources should handle empty installations`() {
+        val runId = UUID.randomUUID()
+
+        every { cachingService.get("runId") } returns runId
+        every { gitHubClient.getInstallations(any()) } returns emptyList()
+
+        gitHubScanningService.scanGitHubResources()
+
+        verify { webSocketService.sendMessage(eq("$runId/organizations"), eq(emptyList<Organization>())) }
+    }
+
     @Test
     fun `scanGitHubResources should throw JwtTokenNotFound when jwtToken is expired`() {
         every { cachingService.get("jwtToken") } returns null