diff --git a/src/d_dehacked.cpp b/src/d_dehacked.cpp
index 444e3cd180..03edbd6dc4 100644
--- a/src/d_dehacked.cpp
+++ b/src/d_dehacked.cpp
@@ -2354,6 +2354,8 @@ static bool LoadDehSupp ()
 				{
 					sc.MustGetString();
 					DEHSprName s;
+					// initialize with zeroes
+					memset(&s, 0, sizeof(s));
 					if (strlen(sc.String) ==4)
 					{
 						s.c[0] = sc.String[0];
diff --git a/src/p_sight.cpp b/src/p_sight.cpp
index 3b59eb9e50..cc2940d7d7 100644
--- a/src/p_sight.cpp
+++ b/src/p_sight.cpp
@@ -180,10 +180,10 @@ bool SightCheck::PTR_SightTraverse (intercept_t *in)
 						fixed_t ffb_bottom=rover2->bottom.plane->ZatPoint(trX, trY);
 						fixed_t ffb_top=rover2->top.plane->ZatPoint(trX, trY);
 
-						if (ffb_bottom >= ff_bottom && ffb_bottom<=ff_top ||
-							ffb_top <= ff_top && ffb_top >= ff_bottom ||
-							ffb_top >= ff_top && ffb_bottom <= ff_bottom ||
-							ffb_top <= ff_top && ffb_bottom >= ff_bottom)
+						if ( (ffb_bottom >= ff_bottom && ffb_bottom<=ff_top) ||
+							(ffb_top <= ff_top && ffb_top >= ff_bottom) ||
+							(ffb_top >= ff_top && ffb_bottom <= ff_bottom) ||
+							(ffb_top <= ff_top && ffb_bottom >= ff_bottom) )
 						{
 							return false;
 						}
diff --git a/src/thingdef/thingdef_codeptr.cpp b/src/thingdef/thingdef_codeptr.cpp
index c991bf374b..b59cb6c92a 100644
--- a/src/thingdef/thingdef_codeptr.cpp
+++ b/src/thingdef/thingdef_codeptr.cpp
@@ -2593,7 +2593,7 @@ DEFINE_ACTION_FUNCTION(AActor, A_RaiseChildren)
    TThinkerIterator<AActor> it;
    AActor * mo;
 
-   while (mo = it.Next())
+   while ((mo = it.Next()))
    {
       if ( mo->master == self )
       {