diff --git a/src/kernel/config.c b/src/kernel/config.c
index d298f77d7..eb5c9064b 100644
--- a/src/kernel/config.c
+++ b/src/kernel/config.c
@@ -530,7 +530,7 @@ int alliedunit(const unit * u, const faction * f2, int mode)
     ally *sf;
     int automode;
 
-    assert(u->region);            /* the unit should be in a region, but it's possible that u->number==0 (TEMP units) */
+    assert(u && u->region);            /* the unit should be in a region, but it's possible that u->number==0 (TEMP units) */
     if (u->faction == f2)
         return mode;
     if (u->faction != NULL && f2 != NULL) {
diff --git a/src/kernel/unit.c b/src/kernel/unit.c
index 6a0e22f08..a43ae2153 100644
--- a/src/kernel/unit.c
+++ b/src/kernel/unit.c
@@ -1281,7 +1281,7 @@ static int update_gbdream(const unit * u, int bonus, curse *c, const curse_type
         /* wir suchen jeweils den groessten Bonus und den groestsen Malus */
         if (sign * effect > sign * bonus) {
             if (mage == NULL || mage->number == 0
-                || sign>0?alliedunit(mage, u->faction, HELP_GUARD):!alliedunit(mage, u->faction, HELP_GUARD)) {
+                || (sign>0?alliedunit(mage, u->faction, HELP_GUARD):!alliedunit(mage, u->faction, HELP_GUARD))) {
                 bonus = (int)effect;
             }
         }