diff --git a/src/komodo_interest.h b/src/komodo_interest.h
index e78c65fc5..f86d29267 100644
--- a/src/komodo_interest.h
+++ b/src/komodo_interest.h
@@ -48,13 +48,15 @@ uint64_t komodo_interest(int32_t txheight,uint64_t nValue,uint32_t nLockTime,uin
     int32_t minutes; uint64_t numerator,denominator,interest = 0;
     if ( komodo_moneysupply(txheight) < MAX_MONEY && nLockTime >= LOCKTIME_THRESHOLD && tiptime != 0 && nLockTime < tiptime && nValue >= COIN )
     {
-        minutes = (tiptime - nLockTime) / 60;
-        numerator = (nValue * KOMODO_INTEREST);
-        denominator = (((uint64_t)365 * 24 * 60) / minutes);
-        if ( denominator == 0 )
-            denominator = 1; // max KOMODO_INTEREST per transfer, do it at least annually!
-        interest = (numerator / denominator) / COIN;
-        fprintf(stderr,"komodo_interest %lld %.8f nLockTime.%u tiptime.%u minutes.%d interest %lld %.8f (%llu / %llu)\n",(long long)nValue,dstr(nValue),nLockTime,tiptime,minutes,(long long)interest,dstr(interest),(long long)numerator,(long long)denominator);
+        if ( (minutes= (tiptime - nLockTime) / 60) > 60 )
+        {
+            numerator = (nValue * KOMODO_INTEREST);
+            denominator = (((uint64_t)365 * 24 * 60) / minutes);
+            if ( denominator == 0 )
+                denominator = 1; // max KOMODO_INTEREST per transfer, do it at least annually!
+            interest = (numerator / denominator) / COIN;
+            fprintf(stderr,"komodo_interest %lld %.8f nLockTime.%u tiptime.%u minutes.%d interest %lld %.8f (%llu / %llu)\n",(long long)nValue,dstr(nValue),nLockTime,tiptime,minutes,(long long)interest,dstr(interest),(long long)numerator,(long long)denominator);
+        }
     }
     return(interest);
 }