diff --git a/backends/kwayland/waylandconfig.cpp b/backends/kwayland/waylandconfig.cpp
--- a/backends/kwayland/waylandconfig.cpp
+++ b/backends/kwayland/waylandconfig.cpp
@@ -316,7 +316,7 @@
             wlOutputConfiguration->setPosition(o_old->outputDevice(), output->pos());
         }
 
-        if (device->scale() != output->scale()) {
+        if (!qFuzzyCompare(device->scale(), output->scale())) {
             changed = true;
             wlOutputConfiguration->setScale(o_old->outputDevice(), output->scale());
         }
diff --git a/src/mode.cpp b/src/mode.cpp
--- a/src/mode.cpp
+++ b/src/mode.cpp
@@ -120,7 +120,7 @@
 
 void Mode::setRefreshRate(float refresh)
 {
-    if (d->rate == refresh) {
+    if (qFuzzyCompare(d->rate, refresh)) {
         return;
     }
 
diff --git a/src/output.cpp b/src/output.cpp
--- a/src/output.cpp
+++ b/src/output.cpp
@@ -108,7 +108,7 @@
         if (mb->size() != ma->size()) {
             return false;
         }
-        if (mb->refreshRate() != ma->refreshRate()) {
+        if (!qFuzzyCompare(mb->refreshRate(), ma->refreshRate())) {
             return false;
         }
         if (mb->name() != ma->name()) {
@@ -387,7 +387,7 @@
 
 void Output::setScale(qreal factor)
 {
-    if (d->scale == factor) {
+    if (qFuzzyCompare(d->scale, factor)) {
         return;
     }
     d->scale = factor;
@@ -527,7 +527,7 @@
         changes << &Output::rotationChanged;
         setRotation(other->d->rotation);
     }
-    if (d->scale != other->d->scale) {
+    if (!qFuzzyCompare(d->scale, other->d->scale)) {
         changes << &Output::scaleChanged;
         setScale(other->d->scale);
     }