diff --git a/src/main.cpp b/src/main.cpp
index b8ce5dd2f0..4c9b9dcd31 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1072,8 +1072,10 @@ unsigned int TargetGetLength(unsigned int nBits)
 bool TargetGetMint(unsigned int nBits, uint64& nMint)
 {
     nMint = 0;
-    static uint64 nMintLimit = 50 * COIN;
+    static uint64 nMintLimit = 999llu * COIN;
     CBigNum bnMint = nMintLimit;
+    if (TargetGetLength(nBits) < nTargetMinLength)
+        return error("TargetGetMint() : length below minimum required, nBits=%08x", nBits);
     bnMint = (bnMint << nFractionalBits) / nBits;
     bnMint = (bnMint << nFractionalBits) / nBits;
     bnMint = (bnMint / CENT) * CENT;  // mint value rounded to cent