typo bugfix

diff --git a/src/MCview/PDBChain.java b/src/MCview/PDBChain.java
index bd1f640..e9b0247 100755 (executable)
--- a/src/MCview/PDBChain.java
+++ b/src/MCview/PDBChain.java
@@ -178,7 +178,7 @@ public class PDBChain
         at1 = tmpres.findAtom("P");
         at1 = tmpres2.findAtom("P");
       }
-      if ((at1 == null) && (at2 == null))
+      if ((at1 != null) && (at2 != null))
       {
         if (at1.chain.equals(at2.chain))
         {