1 files changed, 3 insertions, 0 deletions
diff --git a/src/chain.cpp b/src/chain.cpp
index 5b8ce076c4..3450ed6c3f 100644
--- a/src/chain.cpp
+++ b/src/chain.cpp
@@ -51,6 +51,9 @@ CBlockLocator CChain::GetLocator(const CBlockIndex *pindex) const {
 }
 
 const CBlockIndex *CChain::FindFork(const CBlockIndex *pindex) const {
+    if (pindex == NULL) {
+        return NULL;
+    }
     if (pindex->nHeight > Height())
         pindex = pindex->GetAncestor(Height());
     while (pindex && !Contains(pindex))