diff --git a/gui/mainwindow.cpp b/gui/mainwindow.cpp
index c2b8c8b13..78c0abb2e 100644
--- a/gui/mainwindow.cpp
+++ b/gui/mainwindow.cpp
@@ -28,7 +28,10 @@
 #include <QFile>
 #include <QInputDialog>
 #include "mainwindow.h"
+
 #include "cppcheck.h"
+#include "path.h"
+
 #include "applicationlist.h"
 #include "aboutdialog.h"
 #include "common.h"
@@ -56,6 +59,19 @@ static QString getDataDir(const QSettings *settings)
     return dataDir.isEmpty() ? appPath : dataDir;
 }
 
+static QList<Suppressions::Suppression> getCheckSuppressions(const ProjectFile &project)
+{
+    QList<Suppressions::Suppression> ret;
+    const std::string projectFilePath = Path::getPathFromFilename(project.getFilename().toStdString());
+    foreach (Suppressions::Suppression suppression, project.getSuppressions()) {
+        if (!suppression.fileName.empty() && suppression.fileName[0]!='*' && !Path::isAbsolute(suppression.fileName))
+            suppression.fileName = Path::simplifyPath(projectFilePath) + suppression.fileName;
+
+        ret.append(suppression);
+    }
+    return ret;
+}
+
 MainWindow::MainWindow(TranslationHandler* th, QSettings* settings) :
     mSettings(settings),
     mApplications(new ApplicationList(this)),
@@ -442,7 +458,7 @@ void MainWindow::doAnalyzeProject(ImportProject p, const bool checkLibrary, cons
         mThread->setAddonsAndTools(mProjectFile->getAddonsAndTools(), mSettings->value(SETTINGS_MISRA_FILE).toString());
         QString clangHeaders = mSettings->value(SETTINGS_VS_INCLUDE_PATHS).toString();
         mThread->setClangIncludePaths(clangHeaders.split(";"));
-        mThread->setSuppressions(mProjectFile->getSuppressions());
+        mThread->setSuppressions(getCheckSuppressions(*mProjectFile));
     }
     mThread->setProject(p);
     mThread->check(checkSettings);
@@ -841,8 +857,8 @@ Settings MainWindow::getCppcheckSettings()
             tryLoadLibrary(&result.library, filename);
         }
 
-        const QList<Suppressions::Suppression> &suppressions = mProjectFile->getSuppressions();
-        foreach (const Suppressions::Suppression &suppression, suppressions) {
+
+        foreach (const Suppressions::Suppression &suppression, getCheckSuppressions(*mProjectFile)) {
             result.nomsg.addSuppression(suppression);
         }
 
diff --git a/gui/newsuppressiondialog.cpp b/gui/newsuppressiondialog.cpp
index ccce6bc8b..9fc598ae1 100644
--- a/gui/newsuppressiondialog.cpp
+++ b/gui/newsuppressiondialog.cpp
@@ -2,7 +2,7 @@
 #include "ui_newsuppressiondialog.h"
 #include "cppcheck.h"
 #include "errorlogger.h"
-
+#include "suppressions.h"
 
 NewSuppressionDialog::NewSuppressionDialog(QWidget *parent) :
     QDialog(parent),
@@ -41,7 +41,8 @@ Suppressions::Suppression NewSuppressionDialog::getSuppression() const
     if (ret.errorId.empty())
         ret.errorId = "*";
     ret.fileName = mUI->mTextFileName->text().toStdString();
-    ret.lineNumber = mUI->mTextLineNumber->text().toInt();
+    if (!mUI->mTextLineNumber->text().isEmpty())
+        ret.lineNumber = mUI->mTextLineNumber->text().toInt();
     ret.symbolName = mUI->mTextSymbolName->text().toStdString();
     return ret;
 }