diff --git a/TestECDSA.java b/TestECDSA.java
new file mode 100644
index 0000000..ca7fe59
--- /dev/null
+++ b/TestECDSA.java
@@ -0,0 +1,49 @@
+/* TestECDSA -- Ensure ECDSA signatures are working.
+   Copyright (C) 2016 Red Hat, Inc.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import java.math.BigInteger;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.Signature;
+
+/**
+ * @test
+ */
+public class TestECDSA {
+
+    public static void main(String[] args) throws Exception {
+        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("EC");
+        KeyPair key = keyGen.generateKeyPair();
+        
+        byte[] data = "This is a string to sign".getBytes("UTF-8");
+        
+        Signature dsa = Signature.getInstance("NONEwithECDSA");
+        dsa.initSign(key.getPrivate());
+        dsa.update(data);
+        byte[] sig = dsa.sign();
+        System.out.println("Signature: " + new BigInteger(1, sig).toString(16));
+        
+        Signature dsaCheck = Signature.getInstance("NONEwithECDSA");
+        dsaCheck.initVerify(key.getPublic());
+        dsaCheck.update(data);
+        boolean success = dsaCheck.verify(sig);
+        if (!success) {
+            throw new RuntimeException("Test failed. Signature verification error");
+        }
+        System.out.println("Test passed.");
+    }
+}
diff --git a/java-1_8_0-openjdk.changes b/java-1_8_0-openjdk.changes
index 3d390fd..a040ec5 100644
--- a/java-1_8_0-openjdk.changes
+++ b/java-1_8_0-openjdk.changes
@@ -1,3 +1,16 @@
+-------------------------------------------------------------------
+Wed Mar  1 08:41:19 UTC 2017 - fstrba@suse.com
+
+- Fix build of Sun Elliptical Curves Crypto provider on Tumbleweed.
+  Fixes bsc#1026102.
+- Clean the mozilla-nss requires and move them into the headless
+
+-------------------------------------------------------------------
+Tue Feb 21 07:18:27 UTC 2017 - asn@cryptomilk.org
+
+- Add a test to check that ECC is working
+  * new file TestECDSA.java
+
 -------------------------------------------------------------------
 Wed Feb  1 12:54:10 UTC 2017 - fstrba@suse.com
 
diff --git a/java-1_8_0-openjdk.spec b/java-1_8_0-openjdk.spec
index 4112fa6..0b90dbd 100644
--- a/java-1_8_0-openjdk.spec
+++ b/java-1_8_0-openjdk.spec
@@ -138,16 +138,12 @@
 %if 0%{?__isa_bits}
 %global bits %{__isa_bits}
 %endif
-%bcond_with zero
 %if 0%{?suse_version} >= 1330 || 0%{?suse_version} == 1315
-%if %{with bootstrap}
-%global with_sunec 0
-%else
 %global with_sunec 1
-%endif
 %else
 %global with_sunec 0
 %endif
+%bcond_with zero
 # Turn on/off some features depending on openSUSE version
 %if 0%{?suse_version} >= 1130
 %if ! %{with zero}
@@ -187,6 +183,8 @@ Source6:        http://icedtea.classpath.org/download/drops/icedtea8/%{icedtea_v
 Source7:        http://icedtea.classpath.org/download/drops/icedtea8/%{icedtea_version}/langtools.tar.xz
 Source8:        http://icedtea.classpath.org/download/drops/icedtea8/%{icedtea_version}/hotspot.tar.xz
 Source9:        http://icedtea.classpath.org/download/drops/icedtea8/%{icedtea_version}/nashorn.tar.xz
+# Test
+Source10:       TestECDSA.java
 # RPM/distribution specific patches
 # RHBZ 1015432
 Patch2:         1015432.patch
@@ -234,12 +232,6 @@ BuildRequires:  zip
 # Requires rest of java
 Requires:       %{name}-headless = %{version}-%{release}
 Requires:       fontconfig
-# mozilla-nss has to be installed to prevent
-# java.security.ProviderException: Could not initialize NSS
-# ...
-# java.io.FileNotFoundException: /usr/lib64/libnss3.so
-#was bnc#634793
-Requires:       mozilla-nss
 # Standard JPackage base provides.
 Provides:       java = %{javaver}
 Provides:       java-%{javaver} = %{version}-%{release}
@@ -321,7 +313,6 @@ Summary:        OpenJDK 8 Runtime Environment
 # Require jpackage-utils for ownership of /usr/lib/jvm/
 Group:          Development/Languages/Java
 Requires:       jpackage-utils
-%requires_eq    mozilla-nss
 # Post requires update-alternatives to install tool update-alternatives.
 Requires(post): update-alternatives
 # Postun requires update-alternatives to uninstall tool update-alternatives.
@@ -345,6 +336,19 @@ Provides:       jndi-dns = %{version}
 Provides:       jndi-ldap = %{version}
 Provides:       jndi-rmi = %{version}
 Provides:       jsse = %{version}
+# mozilla-nss has to be installed to prevent
+# java.security.ProviderException: Could not initialize NSS
+# ...
+# java.io.FileNotFoundException: /usr/lib64/libnss3.so
+#was bnc#634793
+%if %{with sunec}
+# The SunEC built against system NSS uses private APIs that
+# change from time to time. Require thus the version we built
+# against.
+%requires_eq    mozilla-nss
+%else
+Requires:       mozilla-nss
+%endif
 %if 0%{?suse_version} > 1320
 # Require zoneinfo data in java8+ format provided by tzdata-java8 subpackage.
 Requires(post): tzdata-java8
@@ -874,6 +878,16 @@ then
   update-alternatives --remove jre_%{javaver} %{_jvmdir}/%{jrelnk}
 fi
 
+%if %{with_sunec}
+%check
+export JAVA_HOME=$(pwd)/%{buildoutputdir}images/j2sdk-image
+
+# Check ECC is working
+$JAVA_HOME/bin/javac -d . %{SOURCE10}
+$JAVA_HOME/bin/java TestECDSA
+
+%endif
+
 %if 0%{?suse_version} >= 1130
 %posttrans headless
 # bnc#781690#c11: don't trust user defined JAVA_HOME and use the current VM