diff --git a/instat/clsRFunction.vb b/instat/clsRFunction.vb
index 5e28313af7a..a8f5555a4d6 100644
--- a/instat/clsRFunction.vb
+++ b/instat/clsRFunction.vb
@@ -18,6 +18,7 @@ Public Class RFunction
     Inherits RCodeStructure
 
     Public strRCommand As String
+    Private strPackageName As String = ""
 
     Public Sub New()
         OnParametersChanged()
@@ -28,6 +29,10 @@ Public Class RFunction
         bIsAssigned = False
     End Sub
 
+    Public Sub SetPackageName(strName As String)
+        strPackageName = strName
+    End Sub
+
     Public Overrides Function ToScript(Optional ByRef strScript As String = "", Optional strTemp As String = "") As String
         'Converting the RFunction into a string that when run in R gives the appropriate output
         Dim i As Integer
@@ -35,7 +40,10 @@ Public Class RFunction
 
         'Parameters are sorted in the appropriate order and then the script is built.
         SortParameters()
-        strTemp = strRCommand & "("
+        If strPackageName <> "" Then
+            strTemp = strPackageName & "::"
+        End If
+        strTemp = strTemp & strRCommand & "("
         For i = 0 To clsParameters.Count - 1
             If i > 0 Then
                 strTemp = strTemp & ", "
diff --git a/instat/clsRSyntax.vb b/instat/clsRSyntax.vb
index c43a569a6a1..fec315a2006 100644
--- a/instat/clsRSyntax.vb
+++ b/instat/clsRSyntax.vb
@@ -46,6 +46,17 @@ Public Class RSyntax
         bUseCommandString = False
     End Sub
 
+    Public Sub SetPackageName(strName As String)
+        If clsBaseFunction Is Nothing Then
+            MsgBox("Developer error: base function must be set before package name is set.")
+        Else
+            clsBaseFunction.SetPackageName(strName)
+            bUseBaseFunction = True
+            bUseBaseOperator = False
+            bUseCommandString = False
+        End If
+    End Sub
+
     Public Sub SetBaseRFunction(clsFunction As RFunction)
         clsBaseFunction = clsFunction
         bUseBaseFunction = True
diff --git a/instat/dlgOneVarFitModel.vb b/instat/dlgOneVarFitModel.vb
index 6c755e1dd94..73674cb3480 100644
--- a/instat/dlgOneVarFitModel.vb
+++ b/instat/dlgOneVarFitModel.vb
@@ -194,6 +194,7 @@ Public Class dlgOneVarFitModel
 
     Public Sub FitDistFunction()
         UcrBase.clsRsyntax.SetBaseRFunction(clsROneVarFitModel)
+        clsROneVarFitModel.SetPackageName("fitdistrplus")
         clsROneVarFitModel.SetRCommand("fitdist")
         clsROneVarFitModel.AddParameter("distr", Chr(34) & ucrFamily.clsCurrDistribution.strRName & Chr(34))
         SetDataParameter()
@@ -210,7 +211,8 @@ Public Class dlgOneVarFitModel
     End Sub
 
     Private Sub SetVarTest()
-        clsVarTest.SetRCommand("EnvStats::varTest")
+        clsVarTest.SetPackageName("EnvStats")
+        clsVarTest.SetRCommand("varTest")
         UcrBase.clsRsyntax.SetBaseRFunction(clsVarTest)
         clsRConvert.SetRCommand("as.vector")
         clsRConvert.AddParameter("x", clsRFunctionParameter:=UcrReceiver.GetVariables())
@@ -241,7 +243,8 @@ Public Class dlgOneVarFitModel
     End Sub
 
     Private Sub SetNonSignTest()
-        clsRNonSignTest.SetRCommand("signmedian.test:: signmedian.test")
+        clsRNonSignTest.SetPackageName("signmedian.test")
+        clsRNonSignTest.SetRCommand("signmedian.test")
         UcrBase.clsRsyntax.SetBaseRFunction(clsRNonSignTest)
         clsRNonSignTest.AddParameter("x", clsRFunctionParameter:=UcrReceiver.GetVariables())
         clsRNonSignTest.AddParameter("conf.level", nudCI.Value.ToString)
diff --git a/instat/dlgScatterPlot.vb b/instat/dlgScatterPlot.vb
index 49e41d8a303..d675417fb9c 100644
--- a/instat/dlgScatterPlot.vb
+++ b/instat/dlgScatterPlot.vb
@@ -36,11 +36,14 @@ Public Class dlgScatterPlot
     Private Sub InitialiseDialog()
         ucrBase.clsRsyntax.SetOperation("+")
         clsRggplotFunction.SetRCommand("ggplot")
+        clsRggplotFunction.SetPackageName("ggplot2")
         clsRaesFunction.SetRCommand("aes")
+        clsRaesFunction.SetPackageName("ggplot2")
         clsRggplotFunction.AddParameter("mapping", clsRFunctionParameter:=clsRaesFunction)
         ucrBase.clsRsyntax.SetOperatorParameter(True, clsRFunc:=clsRggplotFunction)
 
         clsRgeom_scatterplotFunction.SetRCommand("geom_point")
+        clsRgeom_scatterplotFunction.SetPackageName("ggplot2")
         ucrBase.clsRsyntax.SetOperatorParameter(False, clsRFunc:=clsRgeom_scatterplotFunction)
 
         ucrVariablesAsFactorForScatter.SetFactorReceiver(ucrFactorOptionalReceiver)