diff --git a/apps/openmw/mwgui/statswindow.cpp b/apps/openmw/mwgui/statswindow.cpp
index 0830af0744..49ee7698ee 100644
--- a/apps/openmw/mwgui/statswindow.cpp
+++ b/apps/openmw/mwgui/statswindow.cpp
@@ -179,7 +179,7 @@ namespace MWGui
     void StatsWindow::setValue (const std::string& id, const MWMechanics::DynamicStat<float>& value)
     {
         int current = static_cast<int>(value.getCurrent());
-        int modified = static_cast<int>(value.getModified());
+        int modified = static_cast<int>(value.getModified(false));
 
         // Fatigue can be negative
         if (id != "FBar")
diff --git a/apps/openmw/mwscript/statsextensions.cpp b/apps/openmw/mwscript/statsextensions.cpp
index 78195b3693..f127b2bc4b 100644
--- a/apps/openmw/mwscript/statsextensions.cpp
+++ b/apps/openmw/mwscript/statsextensions.cpp
@@ -218,8 +218,8 @@ namespace MWScript
                     MWMechanics::DynamicStat<float> stat (ptr.getClass().getCreatureStats (ptr)
                         .getDynamic (mIndex));
 
-                    stat.setModified (value, 0);
-                    stat.setCurrent(value);
+                    stat.setBase(value);
+                    stat.setCurrent(value, true);
 
                     ptr.getClass().getCreatureStats (ptr).setDynamic (mIndex, stat);
                 }
@@ -259,19 +259,18 @@ namespace MWScript
                         }
                     }
 
-                    MWMechanics::CreatureStats& stats = ptr.getClass().getCreatureStats (ptr);
+                    MWMechanics::CreatureStats& stats = ptr.getClass().getCreatureStats(ptr);
 
-                    Interpreter::Type_Float current = stats.getDynamic(mIndex).getCurrent();
+                    MWMechanics::DynamicStat<float> stat = stats.getDynamic(mIndex);
 
-                    MWMechanics::DynamicStat<float> stat (ptr.getClass().getCreatureStats (ptr)
-                        .getDynamic (mIndex));
+                    float current = stat.getCurrent();
+                    float base = diff + stat.getBase();
+                    if(mIndex != 2)
+                        base = std::max(base, 0.f);
+                    stat.setBase(base);
+                    stat.setCurrent(diff + current, true);
 
-                    stat.setModified (diff + stat.getModified(), 0);
-                    stat.setCurrentModified (diff + stat.getCurrentModified());
-
-                    stat.setCurrent (diff + current);
-
-                    ptr.getClass().getCreatureStats (ptr).setDynamic (mIndex, stat);
+                    stats.setDynamic (mIndex, stat);
                 }
         };