diff --git a/gui/resultstree.cpp b/gui/resultstree.cpp
index 968475342..b61f5e1bb 100644
--- a/gui/resultstree.cpp
+++ b/gui/resultstree.cpp
@@ -109,7 +109,7 @@ void ResultsTree::AddErrorItem(const ErrorItem &item)
         realfile = tr("Undefined file");
     }
 
-    bool hide = !mShowTypes[SeverityToShowType(GuiSeverity::toString(item.severity))];
+    bool hide = !mShowTypes[SeverityToShowType(item.severity)];
 
     //if there is at least one error that is not hidden, we have a visible error
     if (!hide)
@@ -137,7 +137,7 @@ void ResultsTree::AddErrorItem(const ErrorItem &item)
     //Add user data to that item
     QMap<QString, QVariant> data;
     data["hide"] = false;
-    data["severity"]  = SeverityToShowType(GuiSeverity::toString(item.severity));
+    data["severity"]  = SeverityToShowType(item.severity);
     data["summary"] = item.summary;
     data["message"]  = item.message;
     data["file"]  = item.files[0];
@@ -158,7 +158,7 @@ void ResultsTree::AddErrorItem(const ErrorItem &item)
 
         //Add user data to that item
         QMap<QString, QVariant> child_data;
-        child_data["severity"]  = SeverityToShowType(GuiSeverity::toString(line.severity));
+        child_data["severity"]  = SeverityToShowType(line.severity);
         child_data["summary"] = line.summary;
         child_data["message"]  = line.message;
         child_data["file"]  = item.files[i];
@@ -252,19 +252,19 @@ ShowTypes ResultsTree::VariantToShowType(const QVariant &data)
     return (ShowTypes)value;
 }
 
-ShowTypes ResultsTree::SeverityToShowType(const QString & severity)
+ShowTypes ResultsTree::SeverityToShowType(Severity::SeverityType severity)
 {
-    if (severity == "error")
+    if (severity == Severity::error)
         return SHOW_ERRORS;
-    if (severity == "style")
+    if (severity == Severity::style)
         return SHOW_STYLE;
-    if (severity == "warning")
+    if (severity == Severity::warning)
         return SHOW_WARNINGS;
-    if (severity == "performance")
+    if (severity == Severity::performance)
         return SHOW_PERFORMANCE;
-    if (severity == "portability")
+    if (severity == Severity::portability)
         return SHOW_PORTABILITY;
-    if (severity == "information")
+    if (severity == Severity::information)
         return SHOW_INFORMATION;
 
     return SHOW_NONE;
diff --git a/gui/resultstree.h b/gui/resultstree.h
index 99448261e..652e13435 100644
--- a/gui/resultstree.h
+++ b/gui/resultstree.h
@@ -28,6 +28,7 @@
 #include <QTextStream>
 #include "common.h"
 #include "applicationlist.h"
+#include "errorlogger.h" // Severity
 
 class Report;
 class ErrorItem;
@@ -128,10 +129,10 @@ public:
 
     /**
     * @brief Convert severity string to ShowTypes value
-    * @param severity Error severity string
+    * @param severity Error severity
     * @return Severity converted to ShowTypes value
     */
-    static ShowTypes SeverityToShowType(const QString &severity);
+    static ShowTypes SeverityToShowType(Severity::SeverityType severity);
 
 signals:
     /**
diff --git a/gui/resultsview.cpp b/gui/resultsview.cpp
index 13bf85348..1d4f90568 100644
--- a/gui/resultsview.cpp
+++ b/gui/resultsview.cpp
@@ -88,7 +88,7 @@ void ResultsView::Error(const ErrorItem &item)
     mErrorsFound = true;
     mUI.mTree->AddErrorItem(item);
     emit GotResults();
-    mStatistics->AddItem(ResultsTree::SeverityToShowType(GuiSeverity::toString(item.severity)));
+    mStatistics->AddItem(ResultsTree::SeverityToShowType(item.severity));
 }
 
 void ResultsView::ShowResults(ShowTypes type, bool show)