diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1c5c298c40..b18ad319b0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -186,7 +186,7 @@ set_package_properties(Libinput PROPERTIES TYPE REQUIRED PURPOSE "Required for i
 
 find_package(UDev)
 set_package_properties(UDev PROPERTIES
-    URL "http://www.freedesktop.org/software/systemd/libudev/"
+    URL "https://www.freedesktop.org/wiki/Software/systemd/"
     DESCRIPTION "Linux device library."
     TYPE REQUIRED
     PURPOSE "Required for input handling on Wayland."
diff --git a/autotests/integration/effects/scripted_effects_test.cpp b/autotests/integration/effects/scripted_effects_test.cpp
index c6025eb865..a6739a2f6c 100644
--- a/autotests/integration/effects/scripted_effects_test.cpp
+++ b/autotests/integration/effects/scripted_effects_test.cpp
@@ -15,7 +15,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http:// www.gnu.org/licenses/>.
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *********************************************************************/
 
 #include "scripting/scriptedeffect.h"
diff --git a/effects/screenshot/screenshot.cpp b/effects/screenshot/screenshot.cpp
index d56cfb37b7..86c4bd1e4b 100644
--- a/effects/screenshot/screenshot.cpp
+++ b/effects/screenshot/screenshot.cpp
@@ -655,7 +655,7 @@ void ScreenShotEffect::convertFromGLImage(QImage &img, int w, int h)
 {
     // from QtOpenGL/qgl.cpp
     // Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
-    // see http://qt.gitorious.org/qt/qt/blobs/master/src/opengl/qgl.cpp
+    // see https://github.com/qt/qtbase/blob/dev/src/opengl/qgl.cpp
     if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
         // OpenGL gives RGBA; Qt wants ARGB
         uint *p = (uint*)img.bits();
diff --git a/options.cpp b/options.cpp
index 07534d7c75..aa30eb6b0f 100644
--- a/options.cpp
+++ b/options.cpp
@@ -673,9 +673,9 @@ void Options::setWindowsBlockCompositing(bool value)
 void Options::setGlPreferBufferSwap(char glPreferBufferSwap)
 {
     if (glPreferBufferSwap == 'a') {
-        // buffer cpying is very fast with the nvidia blob
+        // buffer copying is very fast with the nvidia blob
         // but due to restrictions in DRI2 *incredibly* slow for all MESA drivers
-        // see http://www.x.org/releases/X11R7.7/doc/dri2proto/dri2proto.txt, item 2.5
+        // see https://www.x.org/releases/X11R7.7/doc/dri2proto/dri2proto.txt, item 2.5
         if (GLPlatform::instance()->driver() == Driver_NVidia)
             glPreferBufferSwap = CopyFrontBuffer;
         else if (GLPlatform::instance()->driver() != Driver_Unknown) // undetected, finally resolved when context is initialized
diff --git a/plugins/platforms/virtual/egl_gbm_backend.cpp b/plugins/platforms/virtual/egl_gbm_backend.cpp
index 6bceaee356..80514311db 100644
--- a/plugins/platforms/virtual/egl_gbm_backend.cpp
+++ b/plugins/platforms/virtual/egl_gbm_backend.cpp
@@ -191,7 +191,7 @@ static void convertFromGLImage(QImage &img, int w, int h)
 {
     // from QtOpenGL/qgl.cpp
     // Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
-    // see http://qt.gitorious.org/qt/qt/blobs/master/src/opengl/qgl.cpp
+    // see https://github.com/qt/qtbase/blob/dev/src/opengl/qgl.cpp
     if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
         // OpenGL gives RGBA; Qt wants ARGB
         uint *p = (uint*)img.bits();