diff --git a/main.cc b/main.cc
index 1a6581e..02ec270 100644
--- a/main.cc
+++ b/main.cc
@@ -282,14 +282,10 @@ struct ObState {
                         return error(1, "redefinition of rule '%s'",
                                      target);
                     if (sub.size() < frule->sub.size()) {
-                        if (!frule)
-                            frule = &sr;
-                        else {
-                            *frule = sr;
-                            rlist.pop();
-                        }
+                        *frule = sr;
+                        rlist.pop();
                     }
-                }
+                } else frule = &sr;
             }
         }
         return 0;
diff --git a/obuild.cfg b/obuild.cfg
index e5432cb..43875e3 100644
--- a/obuild.cfg
+++ b/obuild.cfg
@@ -14,12 +14,12 @@ rule obuild $FILES [
     shell $CXX $OB_CXXFLAGS -o obuild_ob $sources
 ]
 
-rule cubescript_ob.o [@CUBESCRIPT_PATH/cubescript.cc] [
+rule %_ob.o %.cc [
     echo " CXX" $target
     shell $CXX $OB_CXXFLAGS -c -o $target $source
 ]
 
-rule %_ob.o %.cc [
+rule cubescript_ob.o [@CUBESCRIPT_PATH/cubescript.cc] [
     echo " CXX" $target
     shell $CXX $OB_CXXFLAGS -c -o $target $source
 ]