diff --git a/python/plugins/processing/algs/r/RAlgorithm.py b/python/plugins/processing/algs/r/RAlgorithm.py
index 988c757bdfc..7747046b98e 100644
--- a/python/plugins/processing/algs/r/RAlgorithm.py
+++ b/python/plugins/processing/algs/r/RAlgorithm.py
@@ -434,6 +434,17 @@ class RAlgorithm(GeoAlgorithm):
         else:
             return False, None
 
+    def getParameterDescriptions(self):
+        descs = {}
+        helpfile = unicode(self.descriptionFile) + '.help'
+        if os.path.exists(helpfile):
+            with open(helpFile) as f:
+                descriptions = json.load(f)
+                for param in self.parameters:
+                    if param.name in descriptions:
+                        descs[param.name] = unicode(descriptions[param.name])
+        return descs
+
     def checkBeforeOpeningParametersDialog(self):
         msg = RUtils.checkRIsInstalled()
         if msg is not None:
diff --git a/python/plugins/processing/modeler/ModelerAlgorithm.py b/python/plugins/processing/modeler/ModelerAlgorithm.py
index 71bf9ccf8eb..bd1985778fe 100644
--- a/python/plugins/processing/modeler/ModelerAlgorithm.py
+++ b/python/plugins/processing/modeler/ModelerAlgorithm.py
@@ -544,6 +544,14 @@ class ModelerAlgorithm(GeoAlgorithm):
         except:
             return False, None
 
+    def getParameterDescriptions(self):
+        descs = {}
+        descriptions = self.helpContent
+        for param in self.parameters:
+            if param.name in descriptions:
+                descs[param.name] = unicode(descriptions[param.name])
+        return descs
+
     def todict(self):
         keys = ["inputs", "group", "name", "algs", "helpContent"]
         return {k: v for k, v in self.__dict__.iteritems() if k in keys}
diff --git a/python/plugins/processing/script/ScriptAlgorithm.py b/python/plugins/processing/script/ScriptAlgorithm.py
index 78eda405dc7..0479ea885b6 100644
--- a/python/plugins/processing/script/ScriptAlgorithm.py
+++ b/python/plugins/processing/script/ScriptAlgorithm.py
@@ -105,7 +105,7 @@ class ScriptAlgorithm(GeoAlgorithm):
                     self.processParameterLine(line.strip('\n'))
                 except:
                     self.error = self.tr('This script has a syntax errors.\n'
-                                'Problem with line: %s', 'ScriptAlgorithm') % line
+                                         'Problem with line: %s', 'ScriptAlgorithm') % line
             self.script += line
             line = lines.readline()
         lines.close()
@@ -124,7 +124,6 @@ class ScriptAlgorithm(GeoAlgorithm):
                 except:
                     pass
 
-
     def checkBeforeOpeningParametersDialog(self):
         return self.error
 
@@ -349,3 +348,14 @@ class ScriptAlgorithm(GeoAlgorithm):
             return True, getHtmlFromHelpFile(self, helpfile)
         else:
             return False, None
+
+    def getParameterDescriptions(self):
+        descs = {}
+        helpfile = unicode(self.descriptionFile) + '.help'
+        if os.path.exists(helpfile):
+            with open(helpFile) as f:
+                descriptions = json.load(f)
+                for param in self.parameters:
+                    if param.name in descriptions:
+                        descs[param.name] = unicode(descriptions[param.name])
+        return descs