diff --git a/core/src/test/kotlin/net/corda/core/JarSignatureTestUtils.kt b/core/src/test/kotlin/net/corda/core/JarSignatureTestUtils.kt
index d5d9bed118..273d5b2234 100644
--- a/core/src/test/kotlin/net/corda/core/JarSignatureTestUtils.kt
+++ b/core/src/test/kotlin/net/corda/core/JarSignatureTestUtils.kt
@@ -25,8 +25,8 @@ object JarSignatureTestUtils {
                 .waitFor())
     }
 
-    fun Path.generateKey(alias: String, password: String, name: String) =
-            executeProcess("keytool", "-genkey", "-keystore", "_teststore", "-storepass", "storepass", "-keyalg", "RSA", "-alias", alias, "-keypass", password, "-dname", name)
+    fun Path.generateKey(alias: String, password: String, name: String, keyalg: String = "RSA") =
+            executeProcess("keytool", "-genkey", "-keystore", "_teststore", "-storepass", "storepass", "-keyalg", keyalg, "-alias", alias, "-keypass", password, "-dname", name)
 
     fun Path.createJar(fileName: String, vararg contents: String) =
             executeProcess(*(arrayOf("jar", "cvf", fileName) + contents))
diff --git a/core/src/test/kotlin/net/corda/core/internal/JarSignatureCollectorTest.kt b/core/src/test/kotlin/net/corda/core/internal/JarSignatureCollectorTest.kt
index 1a379a9f09..4c124e81b7 100644
--- a/core/src/test/kotlin/net/corda/core/internal/JarSignatureCollectorTest.kt
+++ b/core/src/test/kotlin/net/corda/core/internal/JarSignatureCollectorTest.kt
@@ -8,6 +8,7 @@ import net.corda.core.JarSignatureTestUtils.updateJar
 import net.corda.core.identity.Party
 import net.corda.testing.core.ALICE_NAME
 import net.corda.testing.core.BOB_NAME
+import net.corda.testing.core.CHARLIE_NAME
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.After
 import org.junit.AfterClass
@@ -129,6 +130,16 @@ class JarSignatureCollectorTest {
         assertFailsWith<SecurityException> { dir.getJarSigners(FILENAME) }
     }
 
+    // Signing with EC algorithm produces META-INF/*.EC file name not compatible with JAR File Spec however it's compatible with java.util.JarVerifier
+    // and our JarSignatureCollector
+    @Test
+    fun `one signer with EC algorithm`() {
+        dir.generateKey(CHARLIE, CHARLIE_PASS, CHARLIE_NAME.toString(), "EC")
+        dir.createJar(FILENAME, "_signable1", "_signable2")
+        val key = dir.signJar(FILENAME, CHARLIE, CHARLIE_PASS)
+        assertEquals(listOf(key), dir.getJarSigners(FILENAME)) // We only used CHARLIE's distinguished name, so the keys will be different.
+    }
+
     private fun signAsAlice() = dir.signJar(FILENAME, ALICE, ALICE_PASS)
     private fun signAsBob() = dir.signJar(FILENAME, BOB, BOB_PASS)
 }