diff --git a/mg/mg0100.cpp b/mg/mg0100.cpp
index fe715eea2..be2795db9 100755
--- a/mg/mg0100.cpp
+++ b/mg/mg0100.cpp
@@ -126,7 +126,7 @@ bool TMask_tabmag::stdmag_handler(TMask_field& f, KEY k)
 // tabella causali: handler della somma segni
 bool TMask_tabmag::sumsign_handler(TMask_field& f, KEY k)
 {        
-  int ok=TRUE;
+  bool ok=TRUE;
   if (k == K_ENTER)
   {                  
     int ss=f.mask().get_int(F_SGNGIAC)-f.mask().get_int(F_SGNRIM);
diff --git a/mg/mglib02.cpp b/mg/mglib02.cpp
index 904877c84..7548a1bf4 100755
--- a/mg/mglib02.cpp
+++ b/mg/mglib02.cpp
@@ -1242,7 +1242,7 @@ real TArticolo_giacenza::giacenza_corretta(const TRectype& rec,bool giac_eff,boo
   { 
     giacenza -= rec.get_real(MAG_INCL);
     giacenza += rec.get_real(MAG_ACL); 
-    giacenza += valorizza_componenti ? 0 : (rec.get_real(MAG_PRODFIN)-rec.get_real(MAG_PRODCOMP));
+    giacenza += valorizza_componenti ? ZERO : (rec.get_real(MAG_PRODFIN)-rec.get_real(MAG_PRODCOMP));
   }
   return giacenza;
 }