diff --git a/src/QZXing-components.pri b/src/QZXing-components.pri
index b32b512..d706fa6 100644
--- a/src/QZXing-components.pri
+++ b/src/QZXing-components.pri
@@ -450,6 +450,10 @@ unix {
 
     DEFINES += NOFMAXL
 
+    contains( CONFIG, ubports) {
+        DEFINES += Q_OS_UBUNTUTOUCH
+    }
+
     contains( CONFIG, sailfishapp) {
         DEFINES += Q_OS_SAILFISH
     } else {
diff --git a/src/QZXingFilter.cpp b/src/QZXingFilter.cpp
index 3fdeb6c..4edb468 100644
--- a/src/QZXingFilter.cpp
+++ b/src/QZXingFilter.cpp
@@ -196,7 +196,7 @@ static QImage* rgbDataToGrayscale(const uchar* data, const CaptureRect& captureR
     for (int y = 1; y <= captureRect.targetHeight; ++y) {
 
     //Quick fix for iOS & macOS devices. Will be handled better in the future
-#if defined(Q_OS_IOS) || defined (Q_OS_MAC) || defined(Q_OS_SAILFISH)
+#if defined(Q_OS_IOS) || defined (Q_OS_MAC) || defined(Q_OS_SAILFISH) || defined(Q_OS_UBUNTUTOUCH)
         uchar* pixel = pixelInit + (y - 1) * captureRect.targetWidth;
 #else
         uchar* pixel = pixelInit + (captureRect.targetHeight - y) * captureRect.targetWidth;