diff --git a/companion/src/eeprominterface.cpp b/companion/src/eeprominterface.cpp
index eac73ad43..a2d10c04b 100644
--- a/companion/src/eeprominterface.cpp
+++ b/companion/src/eeprominterface.cpp
@@ -92,7 +92,7 @@ QString getGVarString(int16_t val, bool sign)
   }
 }
 
-RawSourceRange RawSource::getRange(const ModelData & model, const GeneralSettings & settings, unsigned int flags)
+RawSourceRange RawSource::getRange(const ModelData & model, const GeneralSettings & settings, unsigned int flags) const
 {
   RawSourceRange result;
 
diff --git a/companion/src/eeprominterface.h b/companion/src/eeprominterface.h
index cf021003b..6d4c412bd 100644
--- a/companion/src/eeprominterface.h
+++ b/companion/src/eeprominterface.h
@@ -362,7 +362,7 @@ class RawSource {
 
     QString toString(const ModelData & model);
     
-    RawSourceRange getRange(const ModelData & model, const GeneralSettings & settings, unsigned int flags=0);
+    RawSourceRange getRange(const ModelData & model, const GeneralSettings & settings, unsigned int flags=0) const;
     
     bool operator == ( const RawSource & other) {
       return (this->type == other.type) && (this->index == other.index);