diff --git a/python/plugins/processing/algs/qgis/Clip.py b/python/plugins/processing/algs/qgis/Clip.py
index 2b07aeb399e..6a492d1aa80 100644
--- a/python/plugins/processing/algs/qgis/Clip.py
+++ b/python/plugins/processing/algs/qgis/Clip.py
@@ -40,10 +40,6 @@ from processing.tools import dataobjects, vector
 
 pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
 
-GEOM_25D = [QGis.WKBPoint25D, QGis.WKBLineString25D, QGis.WKBPolygon25D,
-            QGis.WKBMultiPoint25D, QGis.WKBMultiLineString25D,
-            QGis.WKBMultiPolygon25D]
-
 
 class Clip(GeoAlgorithm):
 
@@ -69,11 +65,6 @@ class Clip(GeoAlgorithm):
         layerB = dataobjects.getObjectFromUri(
             self.getParameterValue(Clip.OVERLAY))
 
-        geomType = layerA.dataProvider().geometryType()
-        if geomType in GEOM_25D:
-            raise GeoAlgorithmExecutionException(
-                self.tr('Input layer does not support 2.5D type geometry ({}).').format(QgsWKBTypes.displayString(geomType)))
-
         writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
             layerA.pendingFields(),
             layerA.dataProvider().geometryType(),
diff --git a/python/plugins/processing/algs/qgis/Difference.py b/python/plugins/processing/algs/qgis/Difference.py
index d84c7697f35..9bd27c4c36b 100644
--- a/python/plugins/processing/algs/qgis/Difference.py
+++ b/python/plugins/processing/algs/qgis/Difference.py
@@ -39,10 +39,6 @@ from processing.tools import dataobjects, vector
 
 pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
 
-GEOM_25D = [QGis.WKBPoint25D, QGis.WKBLineString25D, QGis.WKBPolygon25D,
-            QGis.WKBMultiPoint25D, QGis.WKBMultiLineString25D,
-            QGis.WKBMultiPolygon25D]
-
 
 class Difference(GeoAlgorithm):
 
@@ -69,10 +65,6 @@ class Difference(GeoAlgorithm):
             self.getParameterValue(Difference.OVERLAY))
 
         geomType = layerA.dataProvider().geometryType()
-        if geomType in GEOM_25D:
-            raise GeoAlgorithmExecutionException(
-                self.tr('Input layer does not support 2.5D type geometry ({}).').format(QgsWKBTypes.displayString(geomType)))
-
         writer = self.getOutputFromName(
             Difference.OUTPUT).getVectorWriter(layerA.pendingFields(),
                                                geomType,
diff --git a/python/plugins/processing/algs/qgis/Intersection.py b/python/plugins/processing/algs/qgis/Intersection.py
index 45330a734f4..76395c34886 100644
--- a/python/plugins/processing/algs/qgis/Intersection.py
+++ b/python/plugins/processing/algs/qgis/Intersection.py
@@ -49,10 +49,6 @@ for key, value in wkbTypeGroups.items():
     for const in value:
         wkbTypeGroups[const] = key
 
-GEOM_25D = [QGis.WKBPoint25D, QGis.WKBLineString25D, QGis.WKBPolygon25D,
-            QGis.WKBMultiPoint25D, QGis.WKBMultiLineString25D,
-            QGis.WKBMultiPolygon25D]
-
 
 class Intersection(GeoAlgorithm):
 
@@ -80,10 +76,6 @@ class Intersection(GeoAlgorithm):
         vproviderA = vlayerA.dataProvider()
 
         geomType = vproviderA.geometryType()
-        if geomType in GEOM_25D:
-            raise GeoAlgorithmExecutionException(
-                self.tr('Input layer does not support 2.5D type geometry ({}).').format(QgsWKBTypes.displayString(geomType)))
-
         fields = vector.combineVectorFields(vlayerA, vlayerB)
         writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fields,
                                                                      geomType, vproviderA.crs())
diff --git a/python/plugins/processing/algs/qgis/SymmetricalDifference.py b/python/plugins/processing/algs/qgis/SymmetricalDifference.py
index b6796fd8b52..79f5500e00b 100644
--- a/python/plugins/processing/algs/qgis/SymmetricalDifference.py
+++ b/python/plugins/processing/algs/qgis/SymmetricalDifference.py
@@ -39,10 +39,6 @@ from processing.tools import dataobjects, vector
 
 pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
 
-GEOM_25D = [QGis.WKBPoint25D, QGis.WKBLineString25D, QGis.WKBPolygon25D,
-            QGis.WKBMultiPoint25D, QGis.WKBMultiLineString25D,
-            QGis.WKBMultiPolygon25D]
-
 
 class SymmetricalDifference(GeoAlgorithm):
 
@@ -73,10 +69,6 @@ class SymmetricalDifference(GeoAlgorithm):
         providerB = layerB.dataProvider()
 
         geomType = providerA.geometryType()
-        if geomType in GEOM_25D:
-            raise GeoAlgorithmExecutionException(
-                self.tr('Input layer does not support 2.5D type geometry ({}).').format(QgsWKBTypes.displayString(geomType)))
-
         fields = vector.combineVectorFields(layerA, layerB)
         writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
             fields, geomType, providerA.crs())
diff --git a/python/plugins/processing/algs/qgis/Union.py b/python/plugins/processing/algs/qgis/Union.py
index 12c9dce8df9..84efb352ecd 100644
--- a/python/plugins/processing/algs/qgis/Union.py
+++ b/python/plugins/processing/algs/qgis/Union.py
@@ -49,10 +49,6 @@ for key, value in wkbTypeGroups.items():
     for const in value:
         wkbTypeGroups[const] = key
 
-GEOM_25D = [QGis.WKBPoint25D, QGis.WKBLineString25D, QGis.WKBPolygon25D,
-            QGis.WKBMultiPoint25D, QGis.WKBMultiLineString25D,
-            QGis.WKBMultiPolygon25D]
-
 
 class Union(GeoAlgorithm):
 
@@ -79,10 +75,6 @@ class Union(GeoAlgorithm):
         vproviderA = vlayerA.dataProvider()
 
         geomType = vproviderA.geometryType()
-        if geomType in GEOM_25D:
-            raise GeoAlgorithmExecutionException(
-                self.tr('Input layer does not support 2.5D type geometry ({}).').format(QgsWKBTypes.displayString(geomType)))
-
         fields = vector.combineVectorFields(vlayerA, vlayerB)
         writer = self.getOutputFromName(Union.OUTPUT).getVectorWriter(fields,
                                                                       geomType, vproviderA.crs())