diff --git a/src/com/amazon/corretto/crypto/provider/AmazonCorrettoCryptoProvider.java b/src/com/amazon/corretto/crypto/provider/AmazonCorrettoCryptoProvider.java
index 10daf45f..6d1c812e 100644
--- a/src/com/amazon/corretto/crypto/provider/AmazonCorrettoCryptoProvider.java
+++ b/src/com/amazon/corretto/crypto/provider/AmazonCorrettoCryptoProvider.java
@@ -95,6 +95,7 @@ private void buildServiceMap() {
     addService("Cipher", "RSA/ECB/Pkcs1Padding", "RsaCipher$Pkcs1");
     addService("Cipher", "RSA/ECB/OAEPPadding", "RsaCipher$OAEP");
     addService("Cipher", "RSA/ECB/OAEPWithSHA-1AndMGF1Padding", "RsaCipher$OAEPSha1");
+    addService("Cipher", "RSA/ECB/OAEPWithSHA1AndMGF1Padding", "RsaCipher$OAEPSha1");
 
     for (String hash : new String[] {"MD5", "SHA1", "SHA256", "SHA384", "SHA512"}) {
       addService("Mac", "Hmac" + hash, "EvpHmac$" + hash);
diff --git a/tst/com/amazon/corretto/crypto/provider/test/RsaCipherTest.java b/tst/com/amazon/corretto/crypto/provider/test/RsaCipherTest.java
index 82248e72..1ade32dd 100644
--- a/tst/com/amazon/corretto/crypto/provider/test/RsaCipherTest.java
+++ b/tst/com/amazon/corretto/crypto/provider/test/RsaCipherTest.java
@@ -66,6 +66,9 @@
 @ResourceLock(value = TestUtil.RESOURCE_GLOBAL, mode = ResourceAccessMode.READ)
 public class RsaCipherTest {
   private static final String OAEP_SHA1_PADDING = "RSA/ECB/OAEPWithSHA-1AndMGF1Padding";
+  // Aliases are used for compatibility with projects specifying non-JCA-standard names
+  private static final List<String> OAEP_SHA1_PADDING_ALIASES =
+      Arrays.asList("RSA/ECB/OAEPWithSHA1AndMGF1Padding");
   private static final String OAEP_PADDING = "RSA/ECB/OAEPPadding";
   private static final String PKCS1_PADDING = "RSA/ECB/Pkcs1Padding";
   private static final String NO_PADDING = "RSA/ECB/NoPadding";
@@ -94,7 +97,12 @@ public class RsaCipherTest {
   }
 
   public static List<String> paddingParams() {
-    return Arrays.asList(OAEP_PADDING, OAEP_SHA1_PADDING, PKCS1_PADDING, NO_PADDING);
+    List<String> params =
+        new ArrayList<>(Arrays.asList(OAEP_PADDING, OAEP_SHA1_PADDING, PKCS1_PADDING, NO_PADDING));
+    for (String alias : OAEP_SHA1_PADDING_ALIASES) {
+      params.add(alias);
+    }
+    return params;
   }
 
   public static List<String> messageDigestParams() {