diff --git a/python/plugins/processing/algs/qgis/Grid.py b/python/plugins/processing/algs/qgis/Grid.py
index 2411f362829..c2d2d428dec 100644
--- a/python/plugins/processing/algs/qgis/Grid.py
+++ b/python/plugins/processing/algs/qgis/Grid.py
@@ -96,10 +96,10 @@ class Grid(QgisAlgorithm):
 
         self.addParameter(QgsProcessingParameterDistance(self.HSPACING,
                                                          self.tr('Horizontal spacing'),
-                                                         0.0001, self.CRS, False, 0, 1000000000.0))
+                                                         1.0, self.CRS, False, 0, 1000000000.0))
         self.addParameter(QgsProcessingParameterDistance(self.VSPACING,
                                                          self.tr('Vertical spacing'),
-                                                         0.0001, self.CRS, False, 0, 1000000000.0))
+                                                         1.0, self.CRS, False, 0, 1000000000.0))
         self.addParameter(QgsProcessingParameterDistance(self.HOVERLAY,
                                                          self.tr('Horizontal overlay'),
                                                          0.0, self.CRS, False, 0, 1000000000.0))
diff --git a/python/plugins/processing/algs/qgis/Heatmap.py b/python/plugins/processing/algs/qgis/Heatmap.py
index b301f735a8d..4195402ab61 100644
--- a/python/plugins/processing/algs/qgis/Heatmap.py
+++ b/python/plugins/processing/algs/qgis/Heatmap.py
@@ -98,7 +98,7 @@ class Heatmap(QgisAlgorithm):
                                                               [QgsProcessing.TypeVectorPoint]))
 
         self.addParameter(QgsProcessingParameterDistance(self.RADIUS,
-                                                         self.tr('Radius (layer units)'),
+                                                         self.tr('Radius'),
                                                          100.0, self.INPUT, False, 0.0, 9999999999.99))
 
         radius_field_param = QgsProcessingParameterField(self.RADIUS_FIELD,
diff --git a/python/plugins/processing/algs/qgis/PointsDisplacement.py b/python/plugins/processing/algs/qgis/PointsDisplacement.py
index 9a901bf1df6..40158a6134c 100644
--- a/python/plugins/processing/algs/qgis/PointsDisplacement.py
+++ b/python/plugins/processing/algs/qgis/PointsDisplacement.py
@@ -62,10 +62,10 @@ class PointsDisplacement(QgisAlgorithm):
                                                               self.tr('Input layer'), [QgsProcessing.TypeVectorPoint]))
         self.addParameter(QgsProcessingParameterDistance(self.PROXIMITY,
                                                          self.tr('Minimum distance to other points'), parentParameterName='INPUT',
-                                                         minValue=0.00001, defaultValue=0.00015))
+                                                         minValue=0.00001, defaultValue=1.0))
         self.addParameter(QgsProcessingParameterDistance(self.DISTANCE,
                                                          self.tr('Displacement distance'), parentParameterName='INPUT',
-                                                         minValue=0.00001, defaultValue=0.00015))
+                                                         minValue=0.00001, defaultValue=1.0))
         self.addParameter(QgsProcessingParameterBoolean(self.HORIZONTAL,
                                                         self.tr('Horizontal distribution for two point case')))
         self.addParameter(QgsProcessingParameterFeatureSink(self.OUTPUT, self.tr('Displaced'), QgsProcessing.TypeVectorPoint))
diff --git a/python/plugins/processing/algs/qgis/SnapGeometries.py b/python/plugins/processing/algs/qgis/SnapGeometries.py
index 6f25ea38221..9bb85c4c24d 100644
--- a/python/plugins/processing/algs/qgis/SnapGeometries.py
+++ b/python/plugins/processing/algs/qgis/SnapGeometries.py
@@ -62,7 +62,7 @@ class SnapGeometriesToLayer(QgisAlgorithm):
                                                                QgsProcessing.TypeVectorLine,
                                                                QgsProcessing.TypeVectorPolygon]))
 
-        self.addParameter(QgsProcessingParameterDistance(self.TOLERANCE, self.tr('Tolerance (layer units)'), parentParameterName=self.INPUT,
+        self.addParameter(QgsProcessingParameterDistance(self.TOLERANCE, self.tr('Tolerance'), parentParameterName=self.INPUT,
                                                          minValue=0.00000001, maxValue=9999999999, defaultValue=10.0))
 
         self.modes = [self.tr('Prefer aligning nodes, insert extra vertices where required'),