diff --git a/effects/internal/transformeffect.cpp b/effects/internal/transformeffect.cpp
index 41e249a5e..ec12941e4 100644
--- a/effects/internal/transformeffect.cpp
+++ b/effects/internal/transformeffect.cpp
@@ -28,7 +28,7 @@
 #define BLEND_MODE_MULTIPLY 2
 #define BLEND_MODE_OVERLAY 3
 
-TransformEffect::TransformEffect(Clip* c, const EffectMeta* em) : Effect(c, em) {
+TransformEffect::TransformEffect(Clip* c, const EffectMeta* em) : Effect(c, em) {    
     enable_coords = true;
 
 	EffectRow* position_row = add_row("Position:");
diff --git a/ui/timelinewidget.cpp b/ui/timelinewidget.cpp
index 86a202991..50e9a0cd0 100644
--- a/ui/timelinewidget.cpp
+++ b/ui/timelinewidget.cpp
@@ -1504,7 +1504,7 @@ void TimelineWidget::update_ghosts(const QPoint& mouse_pos, bool lock_frame) {
 
 	if (panel_timeline->importing) {
 		QToolTip::showText(mapToGlobal(mouse_pos), frame_to_timecode(earliest_in_point, config.timecode_view, sequence->frame_rate));
-	} else {
+    } else {
 		QString tip = ((frame_diff < 0) ? "-" : "+") + frame_to_timecode(qAbs(frame_diff), config.timecode_view, sequence->frame_rate);
 		if (panel_timeline->trim_target > -1) {
 			// find which clip is being moved
diff --git a/ui/viewerwidget.cpp b/ui/viewerwidget.cpp
index e32ebcef8..aaec6385e 100644
--- a/ui/viewerwidget.cpp
+++ b/ui/viewerwidget.cpp
@@ -285,16 +285,16 @@ void ViewerWidget::drawTitleSafeArea() {
 }
 
 GLuint ViewerWidget::draw_clip(QOpenGLFramebufferObject* fbo, GLuint texture, bool clear) {
-	glPushMatrix();
-	glLoadIdentity();
-	glOrtho(0, 1, 0, 1, -1, 1);
+    glPushMatrix();
+    glLoadIdentity();
+    glOrtho(0, 1, 0, 1, -1, 1);
 
-	fbo->bind();
+    fbo->bind();
 
     if (clear) glClear(GL_COLOR_BUFFER_BIT);
 
-	glBindTexture(GL_TEXTURE_2D, texture);
-	glBegin(GL_QUADS);
+    glBindTexture(GL_TEXTURE_2D, texture);
+    glBegin(GL_QUADS);
 	glTexCoord2f(0, 0); // top left
 	glVertex2f(0, 0); // top left
 	glTexCoord2f(1, 0); // top right
@@ -327,7 +327,11 @@ void ViewerWidget::process_effect(Clip* c, Effect* e, double timecode, GLTexture
 			}
 			if (e->enable_superimpose) {
 				GLuint superimpose_texture = e->process_superimpose(timecode);
-                if (superimpose_texture != 0) composite_texture = draw_clip(c->fbo[!fbo_switcher], superimpose_texture, false);
+                if (superimpose_texture != 0) {
+                    glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+                    composite_texture = draw_clip(c->fbo[!fbo_switcher], superimpose_texture, false);
+                    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+                }
 			}
 		}
     }