diff --git a/Code/Mantid/MantidQt/CustomInterfaces/src/ConvFit.cpp b/Code/Mantid/MantidQt/CustomInterfaces/src/ConvFit.cpp
index b7aea42f698edeb01050013dc6608afc100554ae..a809b08ff20b1fccaf09cdbac0866a2de4f642e5 100644
--- a/Code/Mantid/MantidQt/CustomInterfaces/src/ConvFit.cpp
+++ b/Code/Mantid/MantidQt/CustomInterfaces/src/ConvFit.cpp
@@ -146,6 +146,7 @@ namespace IDA
   {
     if ( m_cfInputWS == NULL )
     {
+      g_log.error("No workspace loaded");
       return;
     }
 
@@ -774,6 +775,9 @@ namespace IDA
 
   void ConvFit::singleFit()
   {
+    if(!validate())
+      return;
+
     plotInput();
 
     if ( m_curves["CFDataCurve"] == NULL )
diff --git a/Code/Mantid/MantidQt/CustomInterfaces/src/FuryFit.cpp b/Code/Mantid/MantidQt/CustomInterfaces/src/FuryFit.cpp
index 4b82337600eff6b8054e714144be5d9001772f65..f91a98cf06407300116418d29fc53f6e8d0940f4 100644
--- a/Code/Mantid/MantidQt/CustomInterfaces/src/FuryFit.cpp
+++ b/Code/Mantid/MantidQt/CustomInterfaces/src/FuryFit.cpp
@@ -526,6 +526,9 @@ namespace IDA
 
   void FuryFit::singleFit()
   {
+    if(!validate())
+      return;
+
     // First create the function
     auto function = createFunction();
 
diff --git a/Code/Mantid/MantidQt/CustomInterfaces/src/MSDFit.cpp b/Code/Mantid/MantidQt/CustomInterfaces/src/MSDFit.cpp
index cd8ce5d0ecb822643f603fe11c93f653d3303f03..ce237e0b43c2f5f1a9c9e84663fc62efa611ea47 100644
--- a/Code/Mantid/MantidQt/CustomInterfaces/src/MSDFit.cpp
+++ b/Code/Mantid/MantidQt/CustomInterfaces/src/MSDFit.cpp
@@ -88,6 +88,9 @@ namespace IDA
 
   void MSDFit::singleFit()
   {
+    if(!validate())
+      return;
+
     QString pyInput =
       "from IndirectDataAnalysis import msdfit\n"
       "startX = " + QString::number(m_dblManager->value(m_properties["Start"])) +"\n"