diff --git a/extensions/wikidata/src/org/openrefine/wikidata/schema/WbDateConstant.java b/extensions/wikidata/src/org/openrefine/wikidata/schema/WbDateConstant.java
index 75268b6ca..86213f14e 100644
--- a/extensions/wikidata/src/org/openrefine/wikidata/schema/WbDateConstant.java
+++ b/extensions/wikidata/src/org/openrefine/wikidata/schema/WbDateConstant.java
@@ -112,7 +112,7 @@ public class WbDateConstant implements WbExpression<TimeValue> {
 	        Calendar calendar = Calendar.getInstance();
 	    	TimeValue todaysDate = Datamodel.makeTimeValue(
 	    			calendar.get(Calendar.YEAR),
-	    			(byte)calendar.get(Calendar.MONTH),
+	    			(byte)(calendar.get(Calendar.MONTH)+1),
 	    			(byte)calendar.get(Calendar.DAY_OF_MONTH),
 	    			(byte)0, (byte)0, (byte)0, (byte)11, 0,0,0, TimeValue.CM_GREGORIAN_PRO);
 	    	return todaysDate;
diff --git a/extensions/wikidata/tests/src/org/openrefine/wikidata/schema/WbDateConstantTest.java b/extensions/wikidata/tests/src/org/openrefine/wikidata/schema/WbDateConstantTest.java
index 1df4d3c8c..64e8c610c 100644
--- a/extensions/wikidata/tests/src/org/openrefine/wikidata/schema/WbDateConstantTest.java
+++ b/extensions/wikidata/tests/src/org/openrefine/wikidata/schema/WbDateConstantTest.java
@@ -95,7 +95,7 @@ public class WbDateConstantTest extends WbExpressionTest<TimeValue> {
     	TimeValue expectedDate = Datamodel.makeTimeValue(
     			calendar.get(Calendar.YEAR),
     			(byte)calendar.get(Calendar.MONTH),
-    			(byte)calendar.get(Calendar.DAY_OF_MONTH),
+    			(byte)(calendar.get(Calendar.DAY_OF_MONTH)+1),
     			(byte)0, (byte)0, (byte)0, (byte)11, 0,0,0, TimeValue.CM_GREGORIAN_PRO);
     	evaluatesTo(expectedDate, new WbDateConstant("TODAY"));
     }