diff --git a/src/test/java/test/OTPTest.java b/src/test/java/test/OTPTest.java
index 4ddd8fa..a814ec9 100644
--- a/src/test/java/test/OTPTest.java
+++ b/src/test/java/test/OTPTest.java
@@ -52,6 +52,27 @@ public class OTPTest {
 		}
 	}
 	
+	@Test
+	public void md5Test() {
+		String secret = String.format("%x", new BigInteger(1, "MD5".getBytes()));
+		
+		String base32secret = Base32.encode(hexStr2Bytes(secret));
+		
+		//System.out.println("MD5 String: " + base32secret);
+		
+		assertDoesNotThrow(() -> {
+			OTP testOTP1 = OTPType.HOTP.instance(base32secret, OTPAlgorithm.MD5, 6, 0, 30, false);
+			for(int i = 0; i < 5; i++) {
+				String calculatedPin = testOTP1.getPin();
+				testOTP1.incrementCounter();
+				if(VERBOSE) {
+					System.out.println("Calculated MD5 pin - counter: " + i + " pin: " + calculatedPin);
+				}
+			}
+			
+		});
+	}
+	
 	@Test
 	public void lengthTest() {
 		assertDoesNotThrow(() -> {