diff --git a/src/main/java/eu/fasten/vulnerabilityproducer/utils/mappers/VersionRanger.java b/src/main/java/eu/fasten/vulnerabilityproducer/utils/mappers/VersionRanger.java
index 17b121e..ce50bd2 100644
--- a/src/main/java/eu/fasten/vulnerabilityproducer/utils/mappers/VersionRanger.java
+++ b/src/main/java/eu/fasten/vulnerabilityproducer/utils/mappers/VersionRanger.java
@@ -19,6 +19,8 @@
 package eu.fasten.vulnerabilityproducer.utils.mappers;
 
 import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
+
 import eu.fasten.vulnerabilityproducer.utils.Vulnerability;
 import eu.fasten.vulnerabilityproducer.utils.connections.JavaHttpClient;
 import org.apache.commons.lang3.tuple.ImmutablePair;
@@ -341,18 +343,20 @@ public List<String> getVulnerableVersionsYAML(List<String> encodedRangeVersions,
 
     public List<String> getVulnerableVersionsJSON(String encodedRangeVersions, List<String> allVersions) {
         var allParsedVersions = allVersions.stream().map(ComparableVersion::new).collect(Collectors.toList());
-        var vulnerableVersions = Lists.newArrayList(allVersions);
+	Set<String> vulnerableVersions = Sets.newLinkedHashSet(allVersions);
+
+        List<Integer> versionIndicesToRemove = Lists.newArrayList();
+	List<Integer> versionIndicesToKeep = Lists.newArrayList();
 
         for (String range : encodedRangeVersions.split(",")) {
             String operator = range.strip().split("[0-9]")[0].strip();
             var versionFromRange = range.strip().substring(operator.length()).strip();
             var parsedVersionFromRange = new ComparableVersion(versionFromRange);
 
-            List<Integer> versionIndicesToRemove = Lists.newArrayList();
             switch (operator) {
                 case "==":
                 case "=": {
-                    versionIndicesToRemove = findUnequalVersions(parsedVersionFromRange, allParsedVersions);
+		    versionIndicesToKeep.addAll(findEqualVersions(parsedVersionFromRange, allParsedVersions));
                     break;
                 }
                 case "<=": {
@@ -374,10 +378,14 @@ public List<String> getVulnerableVersionsJSON(String encodedRangeVersions, List<
                 default:
                     logger.warn("getVulnerableVersionsJSON: unknown operator " + operator);
             }
-            versionIndicesToRemove.stream().map(allVersions::get).forEach(vulnerableVersions::remove);
+	    // If we only have some specific versions in the spec, only those should be kept.
+	    if(versionIndicesToRemove.size() == 0 && versionIndicesToKeep.size() > 0) {
+		vulnerableVersions.clear();
+	    }
+	    versionIndicesToRemove.stream().map(allVersions::get).forEach(vulnerableVersions::remove);	
+	    versionIndicesToKeep.stream().map(allVersions::get).forEach(vulnerableVersions::add);
         }
-
-        return vulnerableVersions;
+        return vulnerableVersions.stream().collect(Collectors.toList());
     }
 
      private List<Integer> findUnequalVersions(ComparableVersion v, List<ComparableVersion> allVersions) {
diff --git a/src/test/java/eu/fasten/vulnerabilityproducer/mappers/VersionRangerTest.java b/src/test/java/eu/fasten/vulnerabilityproducer/mappers/VersionRangerTest.java
index 1605594..2c31e4f 100644
--- a/src/test/java/eu/fasten/vulnerabilityproducer/mappers/VersionRangerTest.java
+++ b/src/test/java/eu/fasten/vulnerabilityproducer/mappers/VersionRangerTest.java
@@ -198,6 +198,20 @@ public void testVulnerableVersionsJSON_Equal() {
         assertEquals(vvCheck, vv);
     }
 
+    @Test
+    public void testVulnerableVersionsJSON_EqualTwice() {
+        when(clientMock.sendGet("https://pypi.org/pypi/mock/json")).thenReturn(pythonPgk);
+
+        var allVersions = vr.getVersions("pkg:pypi/mock");
+        String encodedRange = "==1.0.1rc,=2.0";
+        List<String> vv = vr.getVulnerableVersionsJSON(encodedRange, allVersions);
+        List<String> vvCheck = new ArrayList<>();
+        vvCheck.add("1.0.1rc");
+	vvCheck.add("2.0");
+
+        assertEquals(vvCheck, vv);
+    }
+
     @Test
     public void testVulnerableVersionsJSON_SmallerThanOrEqual() {
         when(clientMock.sendGet("https://pypi.org/pypi/mock/json")).thenReturn(pythonPgk);
@@ -296,6 +310,19 @@ public void testVulnerableVersionJSON_Compound2() {
         assertEquals(vvCheck, vv);
     }
 
+    @Test
+    public void testVulnerableVersionJSON_Compound3() {
+        when(clientMock.sendGet("https://pypi.org/pypi/mock/json")).thenReturn(pythonPgk);
+        List<String> allVersions = vr.getVersions("pkg:pypi/mock");
+        String encodedRange = ">1.0.2, <=2.0, =2.0.2";
+        List<String> vv = vr.getVulnerableVersionsJSON(encodedRange, allVersions);
+        List<String> vvCheck = new ArrayList<>();
+        vvCheck.add("1.0.9");
+        vvCheck.add("2.0");
+	vvCheck.add("2.0.2");
+        assertEquals(vvCheck, vv);
+    }
+
     @Test
     public void testVulnerableVersionsYAMLPartOne() {
         when(clientMock.sendGet("https://pypi.org/pypi/mock/json")).thenReturn(pythonPgk);