diff --git a/kstars/ekos/scheduler/scheduler.cpp b/kstars/ekos/scheduler/scheduler.cpp
--- a/kstars/ekos/scheduler/scheduler.cpp
+++ b/kstars/ekos/scheduler/scheduler.cpp
@@ -3378,8 +3378,8 @@
             {
                 appendLogText(i18n("Job '%1' current altitude (%2 degrees) crossed minimum constraint altitude (%3 degrees), "
                                    "marking aborted.", currentJob->getName(),
-                                   QString("%L1").arg(0, p.alt().Degrees(), minAltitude->decimals()),
-                                   QString("%L1").arg(0, currentJob->getMinAltitude(), minAltitude->decimals())));
+                                   QString("%L1").arg(p.alt().Degrees(), 0, 'f', minAltitude->decimals()),
+                                   QString("%L1").arg(currentJob->getMinAltitude(), 0, 'f', minAltitude->decimals())));
 
                 currentJob->setState(SchedulerJob::JOB_ABORTED);
                 stopCurrentJobAction();
diff --git a/kstars/ekos/scheduler/scheduler.ui b/kstars/ekos/scheduler/scheduler.ui
--- a/kstars/ekos/scheduler/scheduler.ui
+++ b/kstars/ekos/scheduler/scheduler.ui
@@ -1036,7 +1036,7 @@
           <item row="0" column="1">
            <widget class="QDoubleSpinBox" name="minAltitude">
             <property name="minimum">
-             <double>15.000000000000000</double>
+             <double>-15.000000000000000</double>
             </property>
             <property name="maximum">
              <double>89.900000000000006</double>