diff --git a/eeschema/sch_sheet.cpp b/eeschema/sch_sheet.cpp
index 67fcf6e942..6ca36082c9 100644
--- a/eeschema/sch_sheet.cpp
+++ b/eeschema/sch_sheet.cpp
@@ -1442,13 +1442,13 @@ const SCH_SHEET_INSTANCE& SCH_SHEET::GetRootInstance() const
 }
 
 
-wxString SCH_SHEET::getPageNumber( const KIID_PATH& aPath ) const
+wxString SCH_SHEET::getPageNumber( const KIID_PATH& aParentPath ) const
 {
     wxString pageNumber;
 
     for( const SCH_SHEET_INSTANCE& instance : m_instances )
     {
-        if( instance.m_Path == aPath )
+        if( instance.m_Path == aParentPath )
         {
             pageNumber = instance.m_PageNumber;
             break;
diff --git a/eeschema/sch_sheet.h b/eeschema/sch_sheet.h
index 5bc824d6a1..84aa2781f4 100644
--- a/eeschema/sch_sheet.h
+++ b/eeschema/sch_sheet.h
@@ -501,14 +501,15 @@ protected:
     bool addInstance( const KIID_PATH& aInstance );
 
     /**
-     * Return the sheet page number for \a aInstance.
+     * Return the sheet page number for \a aParentPath.
      *
      * @warning The #KIID_PATH object must be a full hierarchical path which means the sheet
      *          at index 0 must be the root sheet.
+     * @param aParentPath is the hierarchical path of the sheet that contains an instance of this SCH_SHEET
      *
      * @return the page number for the requested sheet instance.
      */
-    wxString getPageNumber( const KIID_PATH& aInstance ) const;
+    wxString getPageNumber( const KIID_PATH& aParentPath ) const;
 
     /**
      * Set the page number for the sheet instance \a aInstance.