diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/opencitations/CreateActionSetSparkJob.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/opencitations/CreateActionSetSparkJob.java
index c16f8eeea..4051bc6f0 100644
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/opencitations/CreateActionSetSparkJob.java
+++ b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/opencitations/CreateActionSetSparkJob.java
@@ -115,18 +115,20 @@ public class CreateActionSetSparkJob implements Serializable {
 		final String cited = ID_PREFIX
 			+ IdentifierFactory.md5(CleaningFunctions.normalizePidValue("doi", value.getCited()));
 
-		relationList
-			.addAll(
-				getRelations(
-					citing,
-					cited));
+		if(!citing.equals(cited)){
+			relationList
+					.addAll(
+							getRelations(
+									citing,
+									cited));
 
-		if (duplicate && value.getCiting().endsWith(".refs")) {
-			citing = ID_PREFIX + IdentifierFactory
-				.md5(
-					CleaningFunctions
-						.normalizePidValue("doi", value.getCiting().substring(0, value.getCiting().indexOf(".refs"))));
-			relationList.addAll(getRelations(citing, cited));
+			if (duplicate && value.getCiting().endsWith(".refs")) {
+				citing = ID_PREFIX + IdentifierFactory
+						.md5(
+								CleaningFunctions
+										.normalizePidValue("doi", value.getCiting().substring(0, value.getCiting().indexOf(".refs"))));
+				relationList.addAll(getRelations(citing, cited));
+			}
 		}
 
 		return relationList;
diff --git a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/actionmanager/opencitations/ReadCOCITest.java b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/actionmanager/opencitations/ReadCOCITest.java
index 27627f9f6..53af074e1 100644
--- a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/actionmanager/opencitations/ReadCOCITest.java
+++ b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/actionmanager/opencitations/ReadCOCITest.java
@@ -103,6 +103,13 @@ public class ReadCOCITest {
 								.getPath()),
 						new org.apache.hadoop.fs.Path(workingDir + "/COCI/input4"));
 
+		fs
+				.copyFromLocalFile(
+						false, new org.apache.hadoop.fs.Path(getClass()
+								.getResource("/eu/dnetlib/dhp/actionmanager/opencitations/inputFiles/input5")
+								.getPath()),
+						new org.apache.hadoop.fs.Path(workingDir + "/COCI/input5"));
+
 		ReadCOCI
 				.main(
 						new String[] {
@@ -112,7 +119,7 @@ public class ReadCOCITest {
 								workingDir.toString() + "/COCI",
 								"-outputPath",
 								workingDir.toString() + "/COCI_json/",
-								"-inputFile", "input1;input2;input3;input4"
+								"-inputFile", "input1;input2;input3;input4;input5"
 						});
 
 
@@ -123,7 +130,7 @@ public class ReadCOCITest {
 			.textFile(workingDir.toString() + "/COCI_json/*/")
 			.map(item -> OBJECT_MAPPER.readValue(item, COCI.class));
 
-		Assertions.assertEquals(23, tmp.count());
+		Assertions.assertEquals(24, tmp.count());
 
 		Assertions.assertEquals(1, tmp.filter(c -> c.getCiting().equals("10.1207/s15327647jcd3,4-01")).count());
 
diff --git a/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/actionmanager/opencitations/COCI/input5/_SUCCESS b/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/actionmanager/opencitations/COCI/input5/_SUCCESS
new file mode 100644
index 000000000..e69de29bb
diff --git a/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/actionmanager/opencitations/COCI/input5/part-00000-d6d1dc6e-90e3-4791-821a-b84636bc13e2-c000.json.gz b/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/actionmanager/opencitations/COCI/input5/part-00000-d6d1dc6e-90e3-4791-821a-b84636bc13e2-c000.json.gz
new file mode 100644
index 000000000..001322f84
Binary files /dev/null and b/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/actionmanager/opencitations/COCI/input5/part-00000-d6d1dc6e-90e3-4791-821a-b84636bc13e2-c000.json.gz differ
diff --git a/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/actionmanager/opencitations/COCI/input5/part-00061-d6d1dc6e-90e3-4791-821a-b84636bc13e2-c000.json.gz b/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/actionmanager/opencitations/COCI/input5/part-00061-d6d1dc6e-90e3-4791-821a-b84636bc13e2-c000.json.gz
new file mode 100644
index 000000000..12968af39
Binary files /dev/null and b/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/actionmanager/opencitations/COCI/input5/part-00061-d6d1dc6e-90e3-4791-821a-b84636bc13e2-c000.json.gz differ
diff --git a/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/actionmanager/opencitations/inputFiles/input5 b/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/actionmanager/opencitations/inputFiles/input5
new file mode 100644
index 000000000..0a1cd5aca
--- /dev/null
+++ b/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/actionmanager/opencitations/inputFiles/input5
@@ -0,0 +1,2 @@
+oci,citing,cited,creation,timespan,journal_sc,author_sc
+02001000007362801000805046300010563030608046333-02001000007362801000805046300010563030608046333,10.1007/s10854-015-3684-x,10.1007/s10854-015-3684-x,2015-09-01,P7Y2M,no,no
\ No newline at end of file