diff --git a/src/main/kotlin/pemToJks/main.kt b/src/main/kotlin/pemToJks/main.kt
index 27c723e..15e2dd2 100644
--- a/src/main/kotlin/pemToJks/main.kt
+++ b/src/main/kotlin/pemToJks/main.kt
@@ -154,7 +154,7 @@ fun addToKeyStore(ksFile: File, ksPass: CharArray, alias: String, aliasPass: Cha
         ks.setKeyEntry(alias, key, aliasPass, chain)
     } else {
         println("Adding certificate entries to keystore")
-        chain.forEach { ks.setCertificateEntry(alias, it) }
+        chain.forEachIndexed { idx, cert -> ks.setCertificateEntry(alias + idx, cert) }
     }
 
     println("Saving keystore")
diff --git a/src/test/kotlin/pemToJks/MainTest.kt b/src/test/kotlin/pemToJks/MainTest.kt
index 0d16797..1dcc904 100644
--- a/src/test/kotlin/pemToJks/MainTest.kt
+++ b/src/test/kotlin/pemToJks/MainTest.kt
@@ -72,7 +72,7 @@ class MainTest {
     }
 
     @Test
-    fun shouldWriteFirstCertToKeyStore() {
+    fun shouldWriteCertsToKeyStore() {
         val certs = readCertChain(certFile)
 
         addToKeyStore(ksFile, ksPass, alias, aliasPass, certs.toTypedArray(), null)
@@ -80,7 +80,8 @@ class MainTest {
         val ks = KeyStore.getInstance("JKS")
         ksFile.inputStream().use { ks.load(it, ksPass) }
 
-        assertEquals(certs[0], ks.getCertificate(alias))
+        assertEquals(certs[0], ks.getCertificate("alias0"))
+        assertEquals(certs[1], ks.getCertificate("alias1"))
     }
 
     @Test