diff --git a/src/tests/MusrRoot/MusrRoot.xsd b/src/tests/MusrRoot/MusrRoot.xsd
index 8eb9a0e5..a672ad26 100644
--- a/src/tests/MusrRoot/MusrRoot.xsd
+++ b/src/tests/MusrRoot/MusrRoot.xsd
@@ -16,28 +16,30 @@
   
   <xs:complexType name="musrRoot">
     <xs:sequence>
-      <xs:element name="histos" type="histosFolder"/>
+      <xs:element ref="histos"/>
       <xs:element name="RunHeader" type="runHeaderFolder"/>
       <xs:any processContents="skip" minOccurs="0" maxOccurs="unbounded"/> <!-- here can go any additional stuff you like -->
     </xs:sequence>  
   </xs:complexType>
     
-  <xs:complexType name="histosFolder">
+  <xs:element name="histos">
     <xs:annotation>
        <xs:documentation>
          The histos folder is containing potentially various subfolders. 
-          At least one subfolder, called DecayAnaModule, which holds the 
-          muSR decay histograms, must be present.
+         At least two subfolders, called DecayAnaModule, and SlowControlAnaModule,
+         which holds the muSR decay histograms, must be present.
       </xs:documentation>
     </xs:annotation>
       
-    <xs:sequence>
-      <xs:element name="DecayAnaModule" type="decayHistoData"/>
-      <xs:element name="SlowControlAnaModule" type="slowControlHistoData"/>
-      <xs:any processContents="skip" minOccurs="0" maxOccurs="unbounded"/> <!-- here can go any additional stuff you like --> 
-    </xs:sequence>
-  </xs:complexType>
-    
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element name="DecayAnaModule" type="decayHistoData"/>
+        <xs:element name="SCAnaModule" type="slowControlHistoData"/>
+        <xs:any processContents="skip" minOccurs="0" maxOccurs="unbounded"/> <!-- here can go any additional stuff you like -->
+      </xs:sequence>
+    </xs:complexType>
+  </xs:element>
+       
   <xs:complexType name="decayHistoData">
      <xs:sequence>
        <xs:element name="DecayHistoEntry" type="decayHistoEntry" minOccurs="1" maxOccurs="unbounded"/>
@@ -53,7 +55,7 @@
     
   <xs:simpleType name="histoName">
       <xs:restriction base="xs:string">
-        <xs:pattern value="hDecay([0-9]){3}"/> <!-- this means hDecayXXX, where XXX are 3 digits -->
+        <xs:pattern value="hDecay([0-9]){4}"/> <!-- this means hDecayXXX, where XXX are 3 digits -->
       </xs:restriction>
   </xs:simpleType>  
     
@@ -71,17 +73,11 @@
 
   <xs:complexType name="slowControlHistoEntry">
       <xs:sequence>
-        <xs:element name="SlowControlName" type="slowControlName"/>
+        <xs:element name="SlowControlName" type="xs:string"/>
         <xs:element name="SlowControlType" type="slowControlType"/>
       </xs:sequence>
   </xs:complexType>
-    
-  <xs:simpleType name="slowControlName">
-    <xs:restriction base="xs:string">
-      <xs:pattern value="h(\S)+"/>  <!-- this means 'h' followed by one or more characters without space, e.g. 'hTemperature1', but NOT 'hTemp 1'-->      
-    </xs:restriction> 
-  </xs:simpleType>
-    
+       
   <xs:simpleType name="slowControlType">
     <xs:restriction base="xs:string">
       <xs:pattern value="TH1F"/>  
diff --git a/src/tests/MusrRoot/root2xml.C b/src/tests/MusrRoot/root2xml.C
index 9ab45895..2ddfb7c2 100644
--- a/src/tests/MusrRoot/root2xml.C
+++ b/src/tests/MusrRoot/root2xml.C
@@ -47,6 +47,14 @@ void root2xml(const char *filename, const char *xmlFilename)
 
   xml_data.push_back("</MusrRoot>");
 
+  // the sort_histo_folders is needed since XML-Schema is not flexible enough to handle
+  // histos -|
+  //         |- DecayAnaModule
+  //         ... (any other analyzer module sub-folder
+  //         |- SCAnaModule
+  // Hence SCAnaModule has artificially moved up, just to follow DecayAnaModule
+  sort_histo_folders();
+
   ofstream fout(xmlFilename);
 
   for (UInt_t i=0; i<xml_data.size(); i++)
@@ -54,6 +62,49 @@ void root2xml(const char *filename, const char *xmlFilename)
   fout.close();
 }
 
+void sort_histo_folders()
+{
+  vector<string> temp_xml_data;
+
+  // first make a copy of the original xml_data
+  for (unsigned int i=0; i<xml_data.size(); i++)
+    temp_xml_data.push_back(xml_data[i]);
+
+  // remove SCAnaModule from temp_xml_data
+  unsigned int start = 0, end = 0;
+  for (unsigned int i=0; i<temp_xml_data.size(); i++) {
+    if (temp_xml_data[i].find("<SCAnaModule>") != string::npos)
+      start = i;
+    if (temp_xml_data[i].find("</SCAnaModule>") != string::npos)
+      end = i+1;
+  }
+  if ((start > 0) && (end > 0))
+    temp_xml_data.erase(temp_xml_data.begin()+start, temp_xml_data.begin()+end);
+  else // no SCAnaModule present, hence nothing to be done
+    return;
+
+  // insert SCAnaModule just after DecayAnaModule
+  // 1st find end of DecayAnaModule
+  unsigned int pos = 0;
+  for (unsigned int i=0; i<temp_xml_data.size(); i++) {
+    if (temp_xml_data[i].find("</DecayAnaModule>") != string::npos) {
+      pos = i+1;
+      break;
+    }
+  }
+  if (pos == 0) // something is wrong, hence to not do anything
+    return;
+  temp_xml_data.insert(temp_xml_data.begin()+pos, xml_data.begin()+start, xml_data.begin()+end);
+
+  // copy temp_xml_data back into xml_data
+  xml_data.clear();
+  for (unsigned int i=0; i<temp_xml_data.size(); i++)
+    xml_data.push_back(temp_xml_data[i]);
+
+  // clean up
+  temp_xml_data.clear();
+}
+
 void dumpFolder(TFolder *folder, UInt_t offset)
 {
   TString offsetStr="";